
The US Constitution grants the President the power to address foreign threats, as seen in Executive Order 13224, which impedes terrorist funding and is aimed at protecting US citizens from foreign terrorists. The Constitution outlines the President as the only channel of communication between the US and foreign nations, with the power to admit or exclude foreign agents. The Supreme Court has also held that the federal government has exclusive authority over foreign relations, with state laws impinging on foreign relations deemed invalid. The President's authority to address foreign threats is further demonstrated in the visa-issuance process, where the US must be vigilant to ensure admitted aliens do not bear hostile attitudes or intend to harm American citizens or national interests.
| Characteristics | Values |
|---|---|
| Addressing foreign threats | Protecting the United States from foreign terrorists and other national security and public safety threats |
| Immigration laws | Preventing aliens who intend to commit terrorist attacks, threaten national security, espouse hateful ideology, or exploit immigration laws |
| Visa-issuance process | Ensuring aliens approved for admission into the US do not intend to harm Americans or national interests |
| Refugees and stateless individuals | Preventing admission without stringent identification verification |
| Visa programs | Ensuring they are not used by foreign nation-states or other hostile actors to harm US interests |
| Aliens | Ensuring admitted aliens do not bear hostile attitudes towards citizens, culture, government, institutions, or founding principles |
| Foreign relations | Communicating through respective executive departments |
| Foreign policy | Largely falling within the ambit of Congress |
| Recognition of foreign sovereigns | The exclusive authority of the Executive |
| State laws | Invalid if impinging on foreign relations |
| Trade | Curtailing trade with out-of-favor countries |
| Terrorist funding | Impeding funding through Executive Orders |
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What You'll Learn

The President's role in foreign relations
The President's diplomatic role, as described by Hamilton, includes receiving ambassadors and other public ministers. This entails judging the competency of new foreign rulers and deciding whether to recognize and continue or suspend existing treaties. The President is also responsible for negotiating treaties with other countries or political entities and signing them. While the President has the power to negotiate and sign treaties, their ratification requires the approval of two-thirds of the US Senate, demonstrating a system of checks and balances.
Historically, there have been debates about the extent of the President's power in foreign relations. Madison, for instance, argued that large questions of foreign policy fell within the ambit of Congress due to its power "to declare war." The President's role in foreign relations has also been influenced by various doctrines, such as the Monroe Doctrine and the Truman, Eisenhower, Nixon, Carter, and Reagan Doctrines, which have shaped US foreign policy and its approach to global affairs.
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Congressional recognition of foreign nations
The US Constitution grants the President the power to receive and dispatch diplomatic agents, including foreign ambassadors and representatives. This power to receive ambassadors is seen as an acknowledgement of the President's power to recognize other nations. This is a unilateral power that is not shared with Congress.
However, in some cases, the President has sought the judgment and cooperation of Congress before recognizing a new state. For example, in the cases of the Spanish-American republics, Texas, Hayti, and Liberia, the President invoked the input of Congress before recognizing the new state. Additionally, Congress has the power to declare war, which can impact foreign relations.
The recognition of a foreign nation can be done formally or informally. Formally, recognition is given by the Executive on their own responsibility or with the advice and consent of the Senate. Informally, recognition can be done through diplomatic relations, such as sending or receiving a public minister.
The power to recognize a nation can have significant implications for foreign relations. For example, the American recognition of the French Republic and the prompt recognition of Israel by President Truman were both significant acts. Additionally, the refusal to recognize a government can also have consequences, such as President Woodrow Wilson's refusal to recognize the government of Mexico, contributing to its downfall.
In modern times, the Justice Department has issued rules to address the threat posed by foreign adversaries accessing Americans' sensitive personal data. These rules aim to prevent hostile foreign powers from purchasing or otherwise accessing Americans' personal data for malicious purposes. The US government has also taken steps to protect Americans from foreign terrorists and other national security threats, such as by evaluating visa programs and admission processes.
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Preventing foreign access to sensitive data
One notable example is Executive Order 14117, "Preventing Access to Americans' Bulk Sensitive Personal Data and United States Government-Related Data by Countries of Concern." This order aims to prevent countries like Russia, Iran, and China from accessing Americans' personal data, ensuring it is no longer sold to or commercially accessed by hostile foreign powers. The Justice Department's Final Rule complements this order by imposing restrictions on certain data transactions that pose unacceptable risks to national security.
Additionally, the Immigration and Nationality Act (INA) and the International Emergency Economic Powers Act (IEEPA) are leveraged to protect citizens from aliens intending to commit terrorist attacks or threaten national security. Visa programs are scrutinized to prevent their misuse by foreign nation-states or hostile actors intending to harm national interests. The National Foreign Trade Council also plays a role in addressing foreign threats, as seen in cases like National Foreign Trade Council v. Natsios.
To further prevent foreign access to sensitive data, the Department of Homeland Security's Cybersecurity and Infrastructure Security Agency (CISA) develops security requirements. These requirements include organizational and system-level measures to safeguard sensitive personal data. The Final Rule also addresses threats posed by foreign adversaries, ensuring that commercial transactions and specific data exchanges are exempt from broad prohibitions to maintain consumer, economic, scientific, and trade relationships with other countries.
In conclusion, preventing foreign access to sensitive data is a critical aspect of addressing foreign threats. The United States Constitution and its various arms, including executive orders, laws, and departmental actions, provide a framework to safeguard Americans' personal data from foreign adversaries, thus ensuring national security and protecting the interests of the American people.
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Protecting Americans from foreign terrorists
The US Constitution grants the President the authority to take action to protect Americans from foreign terrorists. Executive Order 13224, signed by President George W. Bush in 2001, is a prime example of this. The order was issued in response to the September 11 terrorist attacks and aimed to impede terrorist funding by blocking the assets of designated individuals or entities deemed to pose a significant risk of committing acts of terrorism.
The US Constitution also outlines the conduct of foreign relations, which is primarily the responsibility of the Executive Department, with Congress playing a supporting role. This division of powers has been a subject of debate, with some arguing that Congress should have more influence over foreign policy decisions. The Constitution's focus on centralising foreign relations power at the federal level has been interpreted as a way to ensure the US presents a unified front to the world.
To protect Americans from foreign terrorists, the US government has implemented measures such as evaluating visa programs to ensure they are not exploited by hostile actors, and ensuring that admitted aliens do not bear hostile attitudes towards US citizens, culture, or government. The government also works to prevent access to Americans' sensitive personal data by foreign adversaries, with the Justice Department issuing rules to safeguard this information.
Additionally, the US Constitution grants the President the power to declare war, which can be a tool to address foreign terrorist threats. The President's authority to recognise foreign sovereigns and their territorial bounds is another aspect of the Constitution that can impact counter-terrorism efforts. Overall, the US Constitution provides a framework for the government to protect Americans from foreign terrorists, with the President playing a central role in conducting foreign relations and making national security decisions.
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Visa restrictions for foreign nationals
The US Constitution, along with the Immigration and Nationality Act (INA), empowers the US President to protect US citizens from foreign threats. This includes threats from foreign nationals intending to commit terrorist attacks, threatening national security, or exploiting immigration laws. As such, the US has implemented visa restrictions to safeguard its borders and interests.
One such restriction is the Visa Waiver Program (VWP), which allows citizens from 42 countries to visit the US for tourism or business for up to 90 days without a visa. This program is reciprocal, allowing US citizens to enter these countries under similar conditions. However, the VWP does not guarantee admissibility, which is determined by US Customs and Border Protection officers upon arrival.
In March 2025, the US Department of State announced a visa restriction policy targeting foreign government officials and others facilitating illegal migration into the country. This includes immigration and customs officials, airport and port authority officials, and those responsible for establishing policies that enable the transit of aliens intending to illegally immigrate to the US. The policy is based on Section 212(a)(3)(C) of the INA, which authorises the Secretary of State to render inadmissible any alien whose entry could have adverse foreign policy consequences for the US.
Additionally, the US has emphasised the need to evaluate all visa programs to ensure they are not exploited by foreign nation-states or hostile actors to harm US interests. This includes economic, political, cultural, and national security interests. The US also expects countries along migratory routes to actively prevent and deter the transit of aliens seeking to illegally enter the country.
Furthermore, the US has the authority to deny entry to non-citizens with criminal records or impose restrictions based on the type of conviction and sentence length. The US can also declare a foreigner persona non grata, banning them from entering or expelling them if they are already in the country, usually due to unlawful activity.
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Frequently asked questions
The US Constitution gives the President the power to address foreign threats.
The President is the only channel of communication between the US and foreign nations.
Yes, Congress can help by passing legislation. However, the President has the exclusive authority to recognize foreign sovereigns and their territorial bounds.
The Supreme Court has held that some state laws impacting foreign relations are invalid, even without a relevant federal policy.
Some examples include Executive Order 13224, which impedes terrorist funding, and the Final Rule, which protects Americans' sensitive personal data from foreign adversaries.

























