In 1999, Congress repealed the 65 year old Glass-Steagall provisions, which required banks to separate investments and deposits. Critics allege this led to risky investment practices, and subsequently the 2008 financial crisis.
The House of Representatives voted 421-1 to authorize the use of military force against the perpetrators of the September 11th attacks
The Voting Rights Act of 1965 prohibited racial discrimination in voting by protecting voting rights. It banned poll taxes and literacy tests and required states with historians of Jim Crow discrimination to seek advance clearance before changing and requiring states with histories of Jim Crow discrimination to obtain advance clearance to change laws governing voting.
The U.S. Senate unanimously voted to pass what would become the 26th Amendment, lowering the voting age to 18.
Sen. Rand Paul's motion to hold that the Senate cannot try an impeached official who is no longer in office was defeated 55-45. Most legal scholars agree such a trial is permissible.