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Mano a mano? That would have been Sens. Marco Rubio and Ted Cruz during the last Republican presidential debate before the Iowa caucuses.
Ahead: Fact checks of what hopefuls said steered by PolitiFact in Washington, D.C. See the latest fact checks by PolitiFact here.
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See the latest fact checks by PolitiFact here.
See PolitiFact's check of Ted Cruz's claim Barack Obama has degraded the U.S. military.
See PolitiFact's look into Cruz's claim he hasn't personally insulted Donald Trump.
Donald Trump, who declined to attend, spoke elsewhere in Iowa.