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

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

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

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 ...

Mullin reaffirms Trump’s controversial rhetoric about a Ukraine peace deal. Republican Sen. Markwayne Mullin said Sunday that President Donald Trump is the only one who has the ability to ...

ABC News’ Jonathan Karl interviews Sen. Markwayne Mullin (R-Okla) on “This Week.” ...

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

“Fox News Sunday” — National security adviser Mike Waltz; Sens. John Barrasso, R-Wyo., and Tim Kaine, D-Va.

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.