The Kentucky lawmaker says the president’s threats over Iran and tax-bill stances aim to keep other Republicans in line.

President Donald Trump and his political operation are working to unseat their first Republican incumbent: Kentucky Rep. Thomas Massie, who has drawn Trump's wrath by saying the president lacked the authority to attack Iran's nuclear sites without congressional approval and voted against his massive tax and spending cuts

Donald Trump’s allies have launched a super PAC that will seek to oust Rep. Thomas Massie, a Kentucky Republican who opposed the president’s domestic policy bill and criticized his strikes on Iran’s nuclear facilities.