Rep. Matt Gaetz (R-Fla.), one of former President Donald Trump’s most vocal backers in Congress, has issued a profanity-laced response and challenge on Feb. 10 to an anti-Trump Republican who has started a new political action committee (PAC) that may seek to oust Gaetz in a primary election. Rep. Adam Kinzinger (R-Ill.), one of 10 House Republicans who voted to impeach Trump, recently started a new PAC backing anti-Trump Republicans for the purpose of defeating GOP lawmakers who support the former president. “Adam is a patriot who fought for America from Northwest Florida. We will always appreciate & honor his service. Now, he wants to target my America First politics, referencing me by name,” Gaetz wrote on Twitter on Feb. 10. “My response: [expletive] bring it. Adam needs PACs to win elections. I don’t.” Kinzinger’s office didn’t respond to a request for comment by press time. Kinzinger announced the start of his PAC on …