Markwayne Mullin, R-Okla., shared a health update regarding ... a little different since January," the senator said while standing next to his son in a video posted on Tuesday.

President Donald Trump trashed NBC’s Kristen Welker and praised Republican Sen. Markwayne Mullin on Sunday over a Meet the Press interview in which Mullin blasted the controversy over the ...

Sen. Markwayne Mullin (R-Okla.) is heeding White House advice and taking a long-term view to help explain the sweeping tariffs President Donald Trump unleashed on allies and foes alike last week.

Oklahoma Republican Sen. Markwayne Mullin, a member of the Armed Services Committee, told NBC's "Meet the Press" that the discussion about bombings in Yemen overheard by Jeffrey Goldberg ...

Oklahoma Republican Sen. Markwayne Mullin, who spoke to Trump at the event, says it's evidence of the crowd's "love" and "respect" for a president who "fight[s] for them." "They respect a fighter.