
The Insular Cases refer to a series of US Supreme Court decisions that established a doctrine determining that the US Constitution does not apply fully to territories acquired through conquest after the Spanish-American War and the signing of the Treaty of Paris in 1898. The doctrine, which has never been overruled, holds that the applicability of a constitutional limitation to a particular territory depends on its situation and its relations with the United States. This has had significant implications for the four million people living in Puerto Rico, which was one of the original targets of the Insular Cases doctrine and remains a territory with a separate, not entirely American population. The Insular Cases have been criticised for entrenching outdated and indefensible racial biases, and there have been calls for them to be modified or overruled.
| Characteristics | Values |
|---|---|
| Number of cases | 4 |
| Time period | 1901-1922 |
| Type of cases | US Supreme Court decisions |
| Territories involved | Puerto Rico, Philippines, American Samoa |
| Main issue | To what extent did the US Constitution apply to territories outside the US? |
| Ruling | The Constitution does not apply fully to territories acquired through conquest |
| Impact | Established a doctrine determining the extent of US Constitution in territories |
| Status | Never been overruled, but criticised as outdated and based on racial biases |
| Strategies to remove territories from Insular Cases | Admission to statehood, full independence, independence with a compact of free association |
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What You'll Learn
- The applicability of the US Constitution to territories outside the US
- The role of race in articulating the relationship between American territorial expansion and American citizenship
- The impact of the Spanish-American War on the identity of America as a colonial power
- The distinction between incorporated and unincorporated territories
- The selective application of the Constitution to territories and the implications for citizenship

The applicability of the US Constitution to territories outside the US
The doctrine of the Insular Cases distinguishes between "incorporated" and "unincorporated" territories. The Constitution fully applies to incorporated territories, such as Alaska and Hawaii, where US sovereignty has been established. On the other hand, unincorporated territories like Puerto Rico and the Philippines, which came into US possession through war but were not claimed as sovereign territory, are only partially subject to the Constitution, with citizens being granted basic rights. This distinction gave rise to the concept of "incorporation," where Congress chooses whether to incorporate a newly acquired territory as an integral part of the United States or merely treat it as a territory appurtenant.
The applicability of the Constitution to these territories depends on their situation and relations with the United States. In the case of Downes v. Bidwell, the Supreme Court decided that the Constitution does not inherently apply to territories, particularly regarding revenue and administrative matters. Instead, Congress has the jurisdiction to create laws within these territories, which may not align with the Constitution's restrictions on US states. This decision affirmed that citizens of unincorporated territories can be subject to laws that do not apply to other US citizens.
Despite modern criticism and challenges, the Insular Cases have never been overruled and continue to impact the lives of millions, particularly in Puerto Rico. Critics argue that the decisions were based on outdated racial biases and that Congress should not have the power to decide when and where the Constitution applies. Strategies to remove territories from the Insular Cases doctrine include admission to statehood, full independence, or independence accompanied by a compact of free association. However, each alternative presents its own set of advantages and disadvantages.
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The role of race in articulating the relationship between American territorial expansion and American citizenship
The Insular Cases refer to a series of US Supreme Court decisions that established a doctrine determining that the US Constitution does not apply fully to territories acquired through conquest after the Spanish-American War and the signing of the Treaty of Paris in 1898. The doctrine has never been overruled and continues to provide the foundation for governing inhabited territories and small islands without permanent populations.
The outcome of the Spanish-American War helped shape America's identity as a colonial power. The law reflected an uneasy balance between declaring Puerto Rico to be both a US possession and one with a separate, not entirely "American" population. The Insular Cases established a distinction between incorporated territories, such as Alaska and Hawaii, where US sovereignty had been established, and unincorporated territories, such as Puerto Rico and the Philippines, which came into US possession through war but were not claimed as sovereign territory. The Constitution fully applied to the incorporated areas, while only partial rights were granted to unincorporated areas.
The applicability of constitutional limitations to a particular territory depends on its situation and relations with the United States. If a new territory is not admitted as a state, then Congress can choose whether to "incorporate" it as an integral part of the US or treat it merely as a territory appurtenant to the US. This distinction has been used in court cases to affirm that citizens of certain territories can be subject to laws and regulations that are not applicable to other US citizens.
The Insular Cases have been criticised for being based on outdated and indefensible racial biases and are considered incompatible with modern human rights understandings. Legal scholars have argued that they should be modified or overruled, as they reflect considerable doubt about the capability of native peoples for self-government. Despite this criticism, the Insular Cases continue to influence decisions regarding the status of territories and the rights of their residents, such as in the case of Puerto Rico's debt crisis and the quest for birthright citizenship for individuals born in American Samoa.
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The impact of the Spanish-American War on the identity of America as a colonial power
The Spanish-American War ended with the signing of the Treaty of Paris in 1898, which resulted in the US acquiring several territories, including Puerto Rico, Guam, and the Philippines. The acquisition of these territories raised questions about the extent to which the US Constitution applied to them, leading to a series of Supreme Court decisions known as the Insular Cases. These cases established a doctrine that determined that the US Constitution did not fully apply to territories acquired through conquest after the Spanish-American War. This had a significant impact on the identity of America as a colonial power.
The Insular Cases, including the notable case of Downes v. Bidwell, reflected the justices' doubts about the capability of native peoples for self-government. The rulings distinguished between incorporated territories, where US sovereignty was established and the Constitution fully applied, and unincorporated territories, which were acquired through war but not claimed as sovereign territory. In these unincorporated territories, only partial constitutional rights were granted, giving citizens basic rights. This selective application of the Constitution contributed to shaping America's identity as a colonial power, as it allowed for the differentiation between "American" and non-"American" populations within its possessions.
The impact of the Spanish-American War on America's identity as a colonial power was significant. The acquisition of territories expanded America's presence beyond the mainland, establishing it as a global colonial power. The Insular Cases further solidified this identity by providing a legal framework for governing these territories, often subjecting them to laws and regulations that were not applicable to other citizens of the United States. This selective application of constitutional rights allowed America to exert control over its possessions while denying them the full benefits of US sovereignty.
The consequences of the Insular Cases continue to be felt today, particularly in Puerto Rico, where over 90% of insular citizens reside. Despite modern criticisms and challenges, the doctrine has never been overruled and remains foundational for governing inhabited territories. The impact of the Spanish-American War and the subsequent Insular Cases contributed to America's identity as a colonial power, influencing its relationship with its territories and shaping the rights and status of their citizens.
In conclusion, the Spanish-American War and the resulting Insular Cases had a profound impact on America's identity as a colonial power. The acquisition of territories and the legal framework established by the Supreme Court shaped America's colonial presence and continued to affect the lives of millions of people in these territories, particularly in Puerto Rico. The selective application of the Constitution and the differentiation between incorporated and unincorporated territories contributed to America's evolving identity as a global colonial power.
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The distinction between incorporated and unincorporated territories
The "Insular Cases" refer to a series of US Supreme Court decisions that established a doctrine determining that the US Constitution does not apply fully to territories acquired through conquest after the Spanish-American War and the signing of the Treaty of Paris in 1898. The doctrine has never been overruled and continues to be highly consequential for the four million people who live in Puerto Rico and the US Virgin Islands.
Incorporated territories are fully subject to the US Constitution and enjoy the same status as states. The Bill of Rights and other constitutional limitations apply to these territories in the usual way. Unincorporated territories, on the other hand, are only partially subject to the Constitution, with citizens being granted basic rights. The US Congress has jurisdiction to create laws within these territories, particularly regarding revenue, which would not be allowed by the Constitution for US states.
The status of these unincorporated territories has been a source of controversy, with legal and political science professors urging the court to overturn the Insular Cases as outdated and incompatible with modern human rights understandings. The argument is that the Constitution should apply equally to all territories and that it is not up to Congress to decide which constitutional provisions apply in these territories. However, others defend the Insular Cases, arguing that it is within Congress's authority to determine the appropriate geographical scope of each constitutional provision and decide which rights apply in the territories.
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The selective application of the Constitution to territories and the implications for citizenship
The "Insular Cases" refer to a series of US Supreme Court decisions that established a doctrine determining that the US Constitution does not automatically apply in full to territories acquired through conquest after the Spanish-American War and the signing of the Treaty of Paris in 1898. The term specifically refers to the original set of decisions from 1901 or the entire series of decisions from Downes v. Bidwell (1901) to Balzac v. Porto Rico (1922).
The Insular Cases have significant implications for citizenship and territorial governance. The doctrine distinguishes between "incorporated territories," where US sovereignty has been established and the Constitution fully applies, and "unincorporated territories," which came into US possession through war but are not claimed as sovereign territory. In these unincorporated territories, the Constitution only applies in part, providing citizens with basic rights. The fate of the constitutional provisions in these territories is left to Congress.
The selective application of the Constitution to territories has been a highly contested issue. Critics argue that the Insular Cases are based on outdated and indefensible racial biases, with modern human rights understandings rendering them incompatible with the Constitution. Legal challenges, such as Tuaua v. United States, have sought to overturn the Insular Cases and grant birthright citizenship to those born in territories like American Samoa.
Despite the criticisms and changing contexts since 1901, the doctrine of the Insular Cases has never been overruled and continues to govern inhabited territories and small islands without permanent populations. The implications for citizenship are particularly salient, with Congress having the power to decide who among territory residents obtains citizenship. This selective application of constitutional rights and citizenship has shaped the lives of millions, especially in places like Puerto Rico, where more than 90% of insular citizens reside.
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Frequently asked questions
The Insular Cases refer to a series of US Supreme Court decisions from Downes v. Bidwell (1901) to Balzac v. Porto Rico (1922) that established a doctrine determining that the US Constitution does not apply fully to territories acquired through conquest after the Spanish-American War and the signing of the Treaty of Paris in 1898.
The doctrine of the Insular Cases holds that the US Constitution only applies selectively to territories, and it is up to Congress to decide which constitutional provisions or guarantees apply in these territories and who among territory residents gets citizenship.
The Insular Cases have had significant implications for the status of territories acquired by the US during the Spanish-American War, such as Puerto Rico and the Philippines. The Supreme Court's rulings distinguished between incorporated territories, where US sovereignty had been established and the Constitution fully applied, and unincorporated territories, which came into US possession through war but were not claimed as sovereign territory, and where only basic rights were granted to citizens.
The Insular Cases have never been overruled and continue to provide the foundation for governing inhabited territories and small islands without permanent populations. However, there have been recent legal challenges and criticisms of the Insular Cases, arguing that they are outdated, incompatible with modern human rights understandings, and based on indefensible racial biases.
Recent cases involving Puerto Rico and American Samoa have tested the ability of Congress to decide which constitutional provisions apply in the territories. For example, in Tuaua v. United States, individuals born in American Samoa sought US citizenship, arguing that the Insular Cases should be modified or overruled due to their outdated and racial biases.

























