Presidential proclamation (United States) in the context of Grand Staircase–Escalante National Monument

On March 25, 2019, the United States officially recognized the Golan Heights as being under the sovereignty of Israel. Signed into effect by the Trump administration, the U.S. presidential proclamation marked the first instance of any country recognizing Israeli sovereignty over the Golan Heights; the territory is viewed as part of Syria under international law, though it has been under an Israeli military occupation since the 1967 Arab–Israeli War. In 1981, Israel's government passed the Golan Heights Law — a de facto annexation of the territory.

Israeli officials lobbied the United States into recognizing "Israeli sovereignty" over the territory. The U.S. recognition was seen as a political gift from American president Donald Trump, in a bid to help Israeli prime minister Benjamin Netanyahu gain a favorable standing among voters in the then-upcoming April 2019 legislative election. It was condemned by a number of countries and organizations, including the United Nations and the European Union (see § Reactions). The Syrian government rejected the U.S. statement, describing it as a "blatant attack" on Syria's sovereignty and territorial integrity. The recognition continued under the successor Biden administration.

The United States has 138 protected areas known as national monuments. The president of the United States can establish a national monument by presidential proclamation, and the United States Congress can do so by legislation. The president's authority arises from the Antiquities Act of 1906, which allows the president to proclaim "historic landmarks, historic and prehistoric structures, and other objects of historic or scientific interest" as national monuments.

Concerns about protecting mostly prehistoric Native American ruins and artifacts, collectively known as antiquities, on western federal lands prompted the legislation, which allowed the president to quickly preserve public land without waiting for legislation to pass through an unconcerned Congress. The ultimate goal was to protect all historic and prehistoric sites on U.S. federal lands, and it has resulted in designation of a wide variety of ecological, cultural and historical sites.

In the United States, a national monument is a protected area that can be created from any land owned or controlled by the federal government by proclamation of the president of the United States or an act of Congress. National monuments protect a wide variety of natural and historic resources, including sites of geologic, marine, archaeological, and cultural importance. The Antiquities Act of 1906 gives presidents the power to proclaim national monuments by executive action. In contrast, national parks in the U.S. must be created by Congressional legislation. Some national monuments were first created by presidential action and later designated as national parks by congressional approval.

The 138 national monuments are managed by several federal agencies: the National Park Service, United States Forest Service, United States Fish and Wildlife Service, the Bureau of Land Management, and the National Oceanic and Atmospheric Administration (in the case of marine national monuments). Historically, some national monuments were managed by the War Department.

On December 6, 2017, the United States of America officially recognized Jerusalem as the capital city of the State of Israel. American president Donald Trump, who signed the presidential proclamation, also ordered the relocation of the American diplomatic mission to Jerusalem from Tel Aviv, constituting what is now the Embassy of the United States in Jerusalem, which was established on the grounds of the former Consulate General of the United States in Jerusalem. Israeli prime minister Benjamin Netanyahu welcomed the decision and praised the announcement by the Trump administration. On December 8, U.S. Secretary of State Rex Tillerson clarified that Trump's statement "did not indicate any final status for Jerusalem" and "was very clear that the final status, including the borders, would be left to the two parties to negotiate and decide" in reference to the recognition's impact on the Israeli–Palestinian peace process.

Trump's decision was rejected by the vast majority of world leaders; the United Nations Security Council held an emergency meeting on December 7, where 14 out of 15 members condemned it, but the motion was overturned by U.S. veto power. The United Kingdom, France, Japan, Italy, and Sweden were among the countries who criticized Trump's decision at the meeting. Other countries supported the move; Guatemala affirmed their intent to issue a follow-up on the U.S. recognition and relocate their diplomatic mission to Jerusalem from Tel Aviv, and the Czech Republic, Honduras, Paraguay, and Romania stated that they were also considering the same course of action. Italian politician Federica Mogherini, as the foreign policy chief of the European Union (EU), stated that all EU member countries were united on the issue of Jerusalem—she reaffirmed the EU's firm stance on East Jerusalem being the capital of an independent Palestinian state. By late 2022, only Guatemala, Honduras, and Kosovo had established diplomatic missions to Israel in Jerusalem; Paraguay reversed their 2018 decision within months, and the Honduran foreign ministry has since stated that they are considering a reversal of their decision as well.

The Insurrection Act of 1807 is the U.S. federal law that empowers the president of the United States to nationally deploy the U.S. military and to federalize the National Guard units of the individual states in specific circumstances, such as the suppression of civil disorder, of insurrection, and of armed rebellion against the federal government of the U.S. The Insurrection Act provides a statutory exception to the Posse Comitatus Act (1878) that limits the president's deploying the U.S. military to enforce either civil law or criminal law within the United States.

After invoking and before exercising the powers authorized under the Insurrection Act, Title 10 U.S.C. § 254 requires the publication of a presidential proclamation whereby the U.S. President formally orders the dispersion of the peoples committing civil unrest or armed rebellion. The Defense Department guidelines define "homeland defense" as a constitutional exception to the restrictions of the Posse Comitatus Act; therefore, the political, military, and police measures necessary to protect national security from external threats are exceptions to the restrictions of the act.