President Donald Trump has signed his signature bill of tax and spending cuts at the White House Fourth of July picnic.

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.

President Donald Trump’s decision to launch a military strike on Iran’s nuclear sites without fully consulting the U.S. Congress is layering a partisan approach onto a risky action.