Donald Trump’s GOP allies in the U.S. Senate are privately calling out the former president for “dumb” mistakes that risk his chances at being reelected, according to a new report. Republican lawmakers allied with Trump have largely stuck by the ex-president even in his worst moments, but they are now calling him out from behind the scenes for recent errors in his campaign strategy, according to NBC News. Specifically, many insiders are calling out Trump for getting closer to Laura Loomer, a far-right online influencer known for making racist remarks. Want more breaking political news? Click f…