Trump has appeared to reach a tipping point with the Kentucky Republican as Massie opposes the president’s legislative package and decision to bomb Iran without consulting Congress.

Trump-aligned political advisers have formed a political action committee in Kentucky to oust Rep. Thomas Massie (R-KY), in President Donald Trump‘s first effort to challenge a Republican incumbent. Massie has often bucked his party by voting against the One Big Beautiful Bill Act last month and more recently sowing doubt that Iran was an “imminent

Here’s what to know about Thomas Massie, as Trump launches a campaign to oust one of his loudest intraparty critics from Congress.