Afterward, even as some Republicans tried to distance themselves from Mr. Trump, Mr. Mullin held fast, frequently praising Mr. Trump in policy debates. He forcefully condemned Democrats for impeaching Mr. Trump over his role in the Capitol attack, and in 2022, he introduced a measure that would have expunged the impeachment. In that resolution, Mr. Mullin continued to cite odd “circumstances, unusual voting patterns and voting anomalies” in the 2020 election.
Those public displays of allegiance may have helped Mr. Mullin clinch Mr. Trump’s endorsement during a runoff election in his Senate race in 2022. Citing Mr. Mullin’s views on the Jan. 6 attack and his conservative border politics, Mr. Trump praised his pugnacious spirit.
“Markwayne Mullin is an America First Warrior,” he said.
In his brief time in the Senate, Mr. Mullin has lived up to that description. During a 2023 hearing, he sparred with the president of the International Brotherhood of Teamsters and challenged him to a physical fight, rising from his chair and reaching to take off his wedding ring before an exasperated Senator Bernie Sanders barked at him to sit down, reminding him: “You’re a United States senator.”
His alignment with Mr. Trump’s policies remains strong, particularly around an aggressive approach to immigration. In 2024, at Mr. Trump’s behest, he voted to sink a bipartisan border bill that his Oklahoma colleague, Senator James Lankford, had negotiated.
In an institution where seniority is often vaunted, Mr. Mullin is part of a younger crop of senators who are widely believed to have the president’s ear. Their frequent conversations have helped Mr. Mullin establish himself as a critical partner to Republican leadership and a liaison between senators and the White House.
That connection seems to have been key in helping Mr. Mullin win his next job.
“The president and I have a really good relationship,” Mr. Mullin said on the Capitol steps not long after Mr. Trump named him for the cabinet. “We talk all the time.”
Madeleine Ngo contributed reporting.
