Sen. Markwayne Mullin (R-OK) and International Brotherhood of Teamsters President Sean O’Brien have made up after coming to ...

Oklahoma Sen. Markwayne Mullin introduced labor secretary nominee Lori Chavez-DeRemer at her confirmation hearing Wednesday, ...

More than a year since they almost came to blows, Teamsters President Sean O'Brien and Sen. Markwayne Mullin (R-Okla.) are ...

GOP Sen. Markwayne Mullin said Trump has the capability to apply pressure to Russian President Vladimir Putin to negotiate a ...

You know, the last time Sean and I was in this room together, obviously, we had our differences. Sir, this is a time, this is ...

Sen. Markwayne Mullin (R-Okla.) says he thinks people need to “trust the process” in President Trump’s peace talks with ...

And “This Week” co-anchor and ABC News Chief Global Affairs Correspondent Martha Raddatz and ABC News Chief Foreign ...

To understand Markwayne Mullin’s rise from congressman to senator to Trump confidant, it must be recognized this isn’t a ...

Scott Mitchell and Alex Cameron discussed the latest developments in D.C., including budget negotiations, divisions over ...

U.S. Sen. Markwayne Mullin, (R-Okla.), is supporting President Donald Trump’s plan to relocate Palestinians from Gaza and redevelop the war-torn region into a high-end tourist destination ...

Republican Sen. Markwayne Mullin said Sunday that President Donald Trump is the only one who has the ability to pressure Russian President Vladimir Putin to negotiate to end the war with Ukraine.