Throughout both presidencies, Donald Trump has aggressively pursued expanding U.S. territory and influence through both purchases and military action, targeting Greenland, Canada, Mexico, the Panama Canal, the Gaza Strip, and Cuba. His second administration took concrete military steps, including the 2025 invasion of Venezuela (Operation Absolute Resolve) to remove President Nicolás Maduro and, during the 2026 Iran war, proposed seizing the Strait of Hormuz and Kharg Island. This policy, dubbed the "Donroe Doctrine", revives the Monroe Doctrine, with officials like Stephen Miller and Marco Rubio defending it as necessary superpower conduct, while Trump ordered the renaming of the Gulf of Mexico to "Gulf of America" (2025) and Lake Ontario to "Lake America" (2026). Critics note the last U.S. territorial acquisition was in 1947, and a February 2025 YouGov poll found only 4% of Americans support expansion if it requires force, with 48% opposing it altogether. His economic coercion of Canada—tying tariffs to annexation talk—sparked a "Buy Canadian" movement and contributed to Prime Minister Justin Trudeau's resignation, while Democrats have introduced bills to block military action without Congressional approval. The aggressive policy has drawn widespread international criticism, though the administration maintains it is a necessary reassertion of American power in the Western Hemisphere.