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The Senate's attempt to repeal the Affordable Care Act narrowly failed due to a surprise defection by Sen. John McCain
Learn about LBJ's career in the Senate and explore key votes
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.
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