As the junior senator from Oklahoma, Sen. Markwayne Mullin (R-OK), 47, has amassed an unusual level of clout in a chamber ...

He plays a very constructive role,” Senate Majority Leader John Thune said in an interview. “He’s just a guy who is always looking and driving to try to get things done.

Sen. Markwayne Mullin praised his friendship with a union boss he once threatened to fight during a Senate confirmation hearing Wednesday for Lori Chavez-DeRemer, President Donald Trump’s ...

Sen. Markwayne Mullin (R-Okla.) on Tuesday referred to Canadian Prime Minister Justin Trudeau as “governor,” as the senator ...

Sen. Markwayne Mullin has been ceaselessly tweeting the last few weeks, providing real-time updates on nominees confirmed to President Donald Trump’s administration. “It gives me something to ...

Sen. Markwayne Mullin, R-Okla., and Teamsters President Sean O’Brien made headlines in November 2023 for their heated argument after the representative confronted the union boss on his critical ...