
The US Constitution is a document that sets out the rights of the American people and the rules that govern the United States. It was written in the 1700s by the Founding Fathers, who wanted to create a government with enough power to govern effectively, but not so much power that it could be misused. In contrast, the UK does not have a single constitutional document; its constitution is uncodified and made up of various sources, including statute law, common law, conventions, and works of authority. While the US Constitution establishes three branches of government with checks and balances on each other, the UK's parliamentary sovereignty means that Parliament can pass laws and effectively change the constitution. The US Constitution also grants specific powers to the President and Congress, while the UK's system is based on democratically elected representatives.
| Characteristics | US | UK |
|---|---|---|
| Single constitutional document | Yes | No |
| Constitution in courts | Yes | No |
| Parliamentary sovereignty | No | Yes |
| Separation of powers | Yes | No |
| Supreme Court | Yes | Yes |
| Date of Supreme Court formation | N/A | 2009 |
| Independence of judiciary | Yes | Yes |
| Act of Settlement | N/A | 1701 |
| Act of Union | N/A | 1706-1707 |
| Bill of Rights | N/A | 1689 |
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What You'll Learn
- US Constitution is a single document, UK's is dispersed
- US Constitution has three branches, UK has parliamentary sovereignty
- US federal courts are independent, UK courts are subordinated to Parliament
- US Constitution can be amended, UK's constitution changes with new laws
- US Constitution is explicit, UK's constitution is a collection of traditions and rulings

US Constitution is a single document, UK's is dispersed
The US Constitution is a single, unified document that outlines the rights of the American people and lays out the rules and guidelines for the functioning of the government. It serves as the foundation of American democracy and is considered the most important document in the country. On the other hand, the UK's constitution is not contained in a single document but is dispersed across various sources, including Acts of Parliament, constitutional conventions, court rulings, and legal precedents. This dispersal can make the UK's constitutional framework more challenging to navigate and understand.
The US Constitution establishes a system of checks and balances among the three branches of government: the executive, legislative, and judicial branches. It grants specific powers and responsibilities to each branch, such as the Presidential veto and the legislature's impeachment process, to prevent the concentration of power in a single branch. In contrast, the UK's constitution upholds the principle of parliamentary sovereignty, where Parliament is considered the supreme law-making body. While the UK also has an independent judicial branch with the Supreme Court at its apex, Parliament retains the power to pass laws that override judicial decisions.
The US Constitution, as a written document, provides a clear framework for governance and is deeply entrenched in American society. It was established by the Founding Fathers during the Constitutional Convention in the 1700s, reflecting their desire for a balanced government that could not be overly powerful. The UK's constitution, on the other hand, has evolved organically over time, reflecting the country's long history and traditions. It is an uncodified constitution, lacking a specific amendment procedure, and changes with every new law passed by Parliament.
The dispersed nature of the UK's constitution has its advantages and disadvantages. On the one hand, it allows for flexibility and adaptability, as the constitution can evolve with societal changes without the need for formal amendment processes. On the other hand, the lack of a single unifying document can make it challenging to identify, understand, and interpret the constitution as a whole. The UK's constitution is a living, breathing document that reflects the country's legal and political traditions, while the US Constitution provides a more rigid framework that guides the nation's governance.
In conclusion, while both the US and UK constitutions serve similar purposes, their forms and structures differ significantly. The US Constitution, as a single document, provides a clear and unified set of rules, while the UK's dispersed constitution reflects a more fluid and evolving understanding of constitutional principles. The differences between the two highlight the unique historical and political contexts that shaped their development and continue to influence their respective nations.
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US Constitution has three branches, UK has parliamentary sovereignty
The US Constitution and the UK Parliament are fundamentally different in their structure and operation. The US Constitution, drafted by the Founding Fathers in the 1700s, is a single, unified document that outlines the rights of Americans and establishes a system of checks and balances through three branches of government: the executive, legislative, and judicial. On the other hand, the UK's constitution is uncodified and unwritten, consisting of various sources such as Acts of Parliament, constitutional conventions, and court rulings.
The US Constitution's three branches of government were intentionally designed to prevent the concentration of power in a single person or group. The executive branch, led by the President, executes the laws and has powers such as the Presidential veto. The legislative branch, comprising the House of Representatives and the Senate, creates laws and can impeach the President. Lastly, the judicial branch, headed by the Supreme Court, interprets the laws and ensures they align with the Constitution.
In contrast, the UK's parliamentary system operates under the principle of parliamentary sovereignty, where the Parliament is the supreme law-making body. The UK constitution is not contained in a single document but is a collection of sources, including statute law, common law, and conventions. While the UK also has an independent judicial branch with the Supreme Court at its apex, the courts are not constitutionally equal to the other branches as they are in the US. The UK Supreme Court can rule on the constitutionality of laws, but Parliament holds the power to pass new laws that override these rulings, showcasing the dominance of parliamentary sovereignty.
The differences in the US and UK systems become evident in situations like the Brexit debate. While the US Constitution provides a clear framework for addressing disputes, the UK's uncodified constitution can lead to constitutional chaos, with debates over the role of the courts and the interpretation of parliamentary sovereignty. Ultimately, the US Constitution's three branches and system of checks and balances aim to prevent the abuse of power, while the UK's parliamentary sovereignty grants significant power to the legislative branch, with the courts playing a more subordinate role.
In conclusion, the US Constitution's three branches of government and the UK's parliamentary sovereignty represent distinct approaches to governance. The US system seeks to distribute power and maintain a balance between different branches, while the UK system vests significant authority in its Parliament, allowing for a more flexible and organic constitutional evolution.
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US federal courts are independent, UK courts are subordinated to Parliament
The US Constitution and the UK Parliament are fundamentally different in their structure and operation. The US Constitution, a codified and entrenched document, outlines a system of checks and balances among three branches of government, including an independent judiciary. On the other hand, the UK Parliament operates under an uncodified constitution, based on traditions and court rulings, with parliamentary sovereignty as its central principle.
The US Constitution grants federal courts equal status to other branches, ensuring their independence. US Supreme Court justices are nominated by the President and confirmed by the Senate, serving for life. This process, free from political influence, safeguards judicial independence. The US Supreme Court can declare executive actions or laws unconstitutional, as seen in United States v Nixon, where the Court ruled against President Nixon's claim of executive privilege.
In contrast, the UK's lower courts, including the Supreme Court, are subordinated to Parliament. The UK's uncodified constitution allows Parliament to pass laws that override court rulings. The UK Supreme Court, established in 2009, interprets legislation to ensure compatibility with the European Convention on Human Rights. Judges are nominated by an independent body and can be removed by the monarch upon Parliament's request.
The UK's judicial system has faced criticism for assuming too much power and distorting the constitutional hierarchy. The Brexit debate has brought this tension into sharp focus, as courts are seen as a potential check on Parliament's power. In contrast, the US system provides a clear framework for addressing similar issues, such as the Presidential veto and impeachment processes.
While both the US and the UK have an independent judicial branch, the US Constitution's explicit guarantees of judicial independence and its system of checks and balances provide a stronger foundation for judicial autonomy. The UK's uncodified constitution and principle of parliamentary sovereignty grant Parliament significant authority over the judicial system.
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US Constitution can be amended, UK's constitution changes with new laws
The US Constitution is a single document that serves as the "supreme law" of the land. It establishes a system of checks and balances between the three branches of government, with provisions such as the Presidential veto and the legislature's impeachment process. Amending the US Constitution is a formal process that originates with Congress, which proposes an amendment with a two-thirds majority vote in both the House of Representatives and the Senate. The proposed amendment then requires ratification by three-fourths of the States (38 out of 50) to become part of the Constitution. This process ensures that any changes to the US Constitution are carefully considered and widely accepted.
In contrast, the UK's constitution is unwritten and uncodified, consisting of a collection of constitutional sources such as statute law, common law, conventions, and works of authority. The UK's constitution is not a single document but a compilation of traditions and court rulings that together establish a working constitution. This means that the UK's constitution can be changed more easily than the US Constitution, as there is no specific procedure for amendment. Instead, the UK's constitution evolves organically over time, with new laws passed by Parliament effectively altering the constitution. This flexibility is praised by some as it allows for a pragmatic approach where different ideas can be tried, tested, and developed. However, it has also led to criticisms of constitutional chaos during periods of political upheaval, such as the Brexit negotiations.
The UK and US Constitutions also differ in their treatment of parliamentary sovereignty. While the US Constitution establishes a system of checks and balances to limit the power of any single branch of government, the UK's constitution upholds the principle of parliamentary sovereignty, where Parliament is considered the supreme authority. The UK Supreme Court, established in 2009, is a relatively new concept in the UK's constitutional framework. While it can rule on the constitutionality of laws, Parliament holds the power to pass new laws that override these rulings, further solidifying its sovereignty.
The US Constitution, with its amendment process, provides a stable framework that is challenging to change, even in response to shifting political attitudes and realities. On the other hand, the UK's uncodified constitution offers flexibility and adaptability, allowing it to evolve and be modified over time. This flexibility can be a strength, enabling the UK to try out different approaches and develop its political system pragmatically. However, it can also lead to uncertainty and debates about the role of the courts and the concept of parliamentary sovereignty.
In summary, while the US Constitution is a static document that requires a formal amendment process to be changed, the UK's constitution is a dynamic and evolving framework that adapts with new laws and court rulings. The US Constitution prioritises stability and consensus through its amendment process, while the UK's constitution values flexibility and adaptability to respond to changing circumstances. These differences reflect the distinct historical contexts and political philosophies that shaped the two nations.
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US Constitution is explicit, UK's constitution is a collection of traditions and rulings
The US Constitution and the UK constitution differ in that the US Constitution is a single, explicit document, whereas the UK constitution is uncodified and made up of various traditions, rulings, and sources. The US Constitution is a written document that sets out the rights of the American people and the rules that govern the country. It was created by the Founding Fathers in the 1700s to establish a government with limited power and a system of checks and balances. On the other hand, the UK constitution is not contained in a single document but is spread across various sources, including Acts of Parliament, constitutional conventions, and court rulings. This dispersal can make it more challenging to identify and understand the UK constitution.
The US Constitution provides for a separation of powers, with three branches of government—the executive, legislative, and judicial—each having specific powers and serving as a check on the others. For example, the President has the power to veto legislation passed by Congress, and the House of Representatives can impeach the President. The US Constitution also establishes the independence of the judiciary, with the Supreme Court interpreting the laws and ensuring they align with the Constitution.
In contrast, the UK constitution is based on the principle of parliamentary sovereignty, where Parliament has the power to make and abolish laws. The UK Supreme Court can interpret laws and make judgments on their constitutionality, but Parliament holds the power to pass new laws that override these judgments. This dynamic was evident in the Brexit debate, where the UK Supreme Court ruled that only Parliament had the authority to initiate the process of exiting the European Union.
The UK's uncodified constitution has evolved organically over time, with statute law being one of its most important features. Statute law represents laws passed by Parliament and includes significant acts such as the 1998 Human Rights Act. Other sources of the UK constitution include common law, conventions, and works of authority like the Magna Carta. While the US Constitution is explicit and centralized, the UK constitution is a dynamic collection of traditions and rulings that have evolved over time.
The differences between the US Constitution and the UK constitution reflect the unique historical and political contexts of each country. The US Constitution was created to establish a balanced government with limited powers, while the UK constitution has evolved organically, reflecting the UK's long-standing parliamentary traditions and the sovereignty of its legislature.
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Frequently asked questions
The US Constitution is a single document that sets out the rights of the American people and the rules that govern the country. The UK does not have a single constitutional document; its constitution is spread across various sources, including statute law, common law, conventions, and works of authority.
The UK's constitution is uncodified and unentrenched, meaning it has no specific procedure for amendment. The UK constitution is changed every time a new law is passed by Parliament, as statute law is one of the many sources that make up the UK constitution.
The US Constitution establishes a system of checks and balances to prevent the concentration of power. It sets out terms for the three branches of government to perform checks on each other, such as the Presidential veto and the legislature's impeachment process.
Both countries have democratically elected representatives and an independent judicial branch with a Supreme Court. The courts in both countries work to interpret the law, protect individual rights, and ensure laws are upheld.

























