On March 7th, 1975, in a bipartisan vote, the U.S. Senate voted to amend Rule XXII (which governs the end of debate, and thus filibustering) to lower the threshold for cloture from 67 to 60 votes.
On December 19th, 1998, the House of Representatives passed House Resolution 611, referred President Bill Clinton to the Senate for impeachment prosecution on charges of perjury and obstruction of justice
The House of Representatives voted 421-1 to authorize the use of military force against the perpetrators of the September 11th attacks
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.
The Senate's attempt to repeal the Affordable Care Act narrowly failed due to a surprise defection by Sen. John McCain
