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

Sen. Markwayne Mullin has been a long-time Trump supporter. That closeness could benefit the state, but also could bring a ...

However, Sen. Markwayne Mullin praised the move on social media, framing it as a sign of American strength. While foreign policy has dominated headlines, Congress faces two pressing domestic ...

Sen. Markwayne Mullin, R-Okla., said, “That fight needs to happen.” As for any economic blowback? “If we’ve got to take a little bit along the way, then we’ll take a little bit,” Mullin said. House ...