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Utah Senator Mike Lee addresses the media to announce his endorsement of Texas Senator Ted Cruz for president as CNN prepares for the Republican Presidential Debate March 10, 2016 in Miami, Florida.
Utah Senator Mike Lee addresses the media to announce his endorsement of Texas Senator Ted Cruz for president as CNN prepares for the Republican Presidential Debate March 10, 2016 in Miami, Florida.

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Sen. Lee: This isn't about Trump, this is about the rules

Sen. Mike Lee talks with Dana Bash about his push to change the rules on the Republican convention floor.

Sen. Lee: This isn't about Trump, this is about the rules

Sen. Mike Lee talks with Dana Bash about his push to change the rules on the Republican convention floor.