As Senate whip in 2005, Mitch McConnell helped leader the Senate Republican effort to change the filibuster rules.
BuzzFeed News Reporter
Last updated on November 28, 2012, at 4:23 p.m. ET
Posted on November 28, 2012, at 4:23 p.m. ET
Andrew Kaczynski is a political reporter for BuzzFeed News and is based in New York.
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