Since the 19th century, the United States has considered, and made, several attempts to purchase the island of Greenland from Denmark. Internal discussions within the United States government about acquiring Greenland notably occurred in 1867, 1910, 1946, and 2019, and acquisition has been advocated by former American secretaries of state William H. Seward and James F. Byrnes, privately by former vice president Nelson Rockefeller, and publicly by President Donald Trump, among others.