
U.S. President Donald Trump's remarks about expanding U.S. territory, including reclaiming the Panama Canal, annexing Greenland, and even Canada, have been refuted by many countries. His 'America First' agenda embodies expansionism. The U.S. continues to seek theoretical justifications for its expansionist actions, but regardless of how the rhetoric changes, it essentially reflects the hegemonic behavior and mindset of the United States in pursuit of its own self-interest.