Sen. Bob Corker met with Vice President-elect Mike Pence Thursday, but the Tennessee congressman would not say whether they discussed him possibly serving as secretary of state.
Corker, 64, chairman of the Senate Foreign Relations Committee, confirmed the morning session to the Washington Examiner.
Pence visited Capitol Hill for discussions with Senate Majority Leader Mitch McConnell of Kentucky and House Speaker Paul Ryan of Wisconsin, according to the report.
The vice president-elect also was scheduled to meet with top Democrats.
Others in the nation's top diplomat in the Trump administration include former New York City Mayor Rudy Giuliani and former United Nations Ambassador John Bolton.
South Carolina Gov. Nikki Haley also met Thursday with Trump transition officials to discuss several possibilities, including secretary of state.
Corker, who is in his second term, worked with the Obama administration on the Iran nuclear deal but eventually voted to reject it. He told CNN on Wednesday that he doubted whether Trump would "tear up" the accord on his first day in office, as he promised during the campaign.
"I don't think he's going to come in on January 20th and rip the agreement up," Corker told Jake Tapper. "Which, by the way, because of the way it was done, he can easily do.
"It's a non-binding political commitment," he added. "If President Trump wants to step away from it the day he gets in office, he can — which is why it shouldn't have been done in the manner that it was done."