The Senate failed, barely, to secure a two-thirds majority in favor of convicting President Andrew Johnson
Under the direction of President John Adams, the Congress passed the Sedition Act of 1798, which made it a criminal offence to publish statements critical of the federal government. The first individual to be tried under the law was Rep. Matthew Lyon, who unsurprisingly had voted against its passage. Lyon was re-elected from jail.
Tammy Baldwin (D-WI) became the first openly LGBT senator in 2012.
Visualize the first time in history a cabinet nominee's confirmation ended in a tie.
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.