Senator Orville H. Platt of Connecticut was a powerful advocate for U.S. expansionism during his career in Congress from 1879 to 1905. He helped win congressional approval to annex Hawaii and occupy the Philippines. The rider he attached to a 1901 Army appropriation bill, known as the Platt Amendment, defined U.S.-Cuban relations for more than 30 years.
Prints and Photographs Division, Library of Congress
I firmly believe that when any territory outside the present limits of the United States becomes necessary for our defense or essential for our commercial development, we ought to lose no time in acquiring it if it can be done without injustice to other nations and other people.
Senator Orville Platt of Connecticut, Speech to the U.S. Senate, January 24, 1894