Rubio is seen as a steady foreign policy hand who has the confidence of Trump and Senate colleagues from both parties.

Donald Trump's former primary opponent Sen. Marco Rubio is meeting with the Senate Foreign Relations Committee Wednesday as the president-elect's secretary of state nominee.

Trump's got the bullhorn now to say, ‘MAGA nation is watching,’” said outgoing Dallas County Republican Party Chair Kelley Koch.

Some are expected to have smooth confirmation paths, like Sen. Marco Rubio for secretary of state, while others, like defense secretary pick Pete Hegseth, face headwinds.

Marco Rubio asking the probing questions ... refusing to define what victory looks like in that war. More:Sen. Joni Ernst, once skeptical, says she will vote for Pete Hegseth for defense ...

‘I know what I don’t know,’ SecDef pick says at confirmation hearing. Pete Hegseth conceded that he lacks the experience of previous defense secretaries but said what he has is enough.