Sen. Marco Rubio outlined the importance of oil, gas and coal in his confirmation hearing for secretary of State.

President-elect Donald Trump's cabinet picks face questions this week on Capitol Hill as they seek to assume positions in the incoming administration.

Wyoming Sen. John Barrasso, the No. 2-ranking Republican in the Senate, said on “Face the Nation” Sunday that he backs all of Trump’s cabinet picks.

He was also a candidate in the 2016 GOP presidential primary race, where Trump dubbed him "Little Marco" and Rubio warned voters not to support Trump, saying "friends do not let friends vote for ...

Marco Rubio has been confirmed by the Senate as the country’s next secretary of state. The nomination of the senior senator from Florida, 53, was confirmed on Monday, Jan. 20, hours after Donald Trump took the oath of office as the 47th president.

Marco Rubio, R-Fla ... with just about all of them I support every one of these nominees," said Sen. John Barrasso, R-Wyo., over the weekend ahead of the nomination process.

President-elect Donald Trump’s nominees are pushing through a gauntlet of confirmation hearings with the help of allied Senate Republicans carrying them toward the finish line, despite Democratic

Donald Trump was sworn in as the 47th President of the United States on Monday at the US Capitol. Follow for live news updates

Many of Trump’s nominees to serve in Cabinet and advisory roles are slated to appear this week for hearings before Senate committees, a key test for many of them.

Chris Wright, President-elect Donald Trump's pick to lead the U.S. Energy Department, faced lawmakers for confirmation hearings and called for efforts to "unleash" America's energy sector.

More than 10 percent of current senators first entered the chamber through appointment. Their numbers will soon grow.