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 ...

Blocking the bill would require at least 41 of Schumer’s Democrats to vote against limiting debate on it, which could stop the measure dead in its tracks and could lead to a partial shutdown, which ...