After the attack on Pearl Harbor in 1941, the U.S. Congress voted nearly unanimously to declare war on Japan.
After reports that the USS Maddox had been attacked by North Vietnamese naval vessels, the U.S. House of Representatives voted 422-1 to authorize military action in Vietnam. Eugene Siler was the loan 'Nay' vote.
In support of NATO's mission to overthrow Libyan President Muammar Gadaffi, the House approved the United States military to take limited actions in the North African nation.
See the voting record Sen. Joe Manchin, one of the most moderate members of the current Democratic Caucus.
In 1955, it was declared that the Communist Party (CPUSA) was not a political party but a conspiracy to overthrow the U.S. Government.