Washington imposed sanctions against 15 more people and two Mexico-based companies as it seeks to deepen co-operation to curb flows of the opioid fentanyl to the US.

A majority of Republican presidential frontrunner Donald Trump’s backers want an uncontested primary race, even as his opponents struggle to unite around a single challenger, a survey says.

The US Representative, who was ousted as House speaker in January, announced that he will be leaving the lower chamber of Congress.

Tommy Tuberville announced that he's ending his blockade of hundreds of military promotions over a Pentagon abortion policy, clearing the way for them to be approved.