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 threat” before Trump chose to strike three of its nuclear sites. At the time, he was joined by Reps. Warren Davidson (R-OH) and Andy Harris (R-MD), with all three citing their concerns over the nation’s deficit.