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President Donald Trump railed against U.S. Rep. Henry Cuellar in a post on Truth Social Wednesday night, calling the South Texas congressman "disloyal" and "ungrateful" for sticking with the Democratic Party after Trump pardoned him last year.

In his post, Trump said he expected Cuellar to switch parties and run for reelection as a Republican, but was shocked when Cuellar subsequently filed for reelection as a Democrat.