President-elect Donald Trump is filling key posts in his second administration, and it's shaping up much differently than his first. He's prioritizing loyalists for top jobs.

Trump was bruised and hampered by internal squabbles during his initial term in office. Now he appears focused on remaking the federal government in his own image. Some of his choices could face difficult confirmation battles even with Republicans in control of the U.S. Senate.

Here's a look at whom he has selected so far.

Trump named Florida Sen. Marco Rubio to be secretary of state, making the critic-turned-ally his choice for top diplomat.

Rubio, 53, is a noted hawk on China, Cuba and Iran, and was a finalist to be Trump's running mate on the Republican ticket last summer. Rubio is the vice chairman of the Senate Intelligence Committee and a member of the Senate Foreign Relations Committee.