Former U.S. senator from Florida Marco Rubio jumps into new role as secretary of state with flurry of phone calls, planned trip to Panama.

Secretary of State Marco Rubio is advising his department to cease refugee resettlement operations and begin ramping up vetting of visas from certain regions.

Secretary of State Marco Rubio, in a memo reviewed by NBC News, said additional guidance would be issued on existing passports containing an “X” sex marker.

Efforts to clear unexploded munitions in places like Iraq and Southeast Asia will stop for at least three months, according to a surprise announcement.

Former U.S. Sen. Marco Rubio was sworn in as secretary of State on Tuesday morning and pledged to improve the department and make the country and world better over the next four years.

Marco Rubio will head overseas late next week; he's also scheduled to visit Guatemala, El Salvador, Costa Rica and the Dominican Republic.

President Trump's Department of Homeland Security finds "an actual or imminent mass influx" of illegal immigrants at the southern border.

President Donald Trump posted threats against Colombia on his social media platform on Sunday after two U.S. military repatriation flights were prevented from landing.

The State Department has suspended the processing of passport applications that selected “X” as their gender following an executive order from President Donald Trump.

The hack at Change Healthcare stands as the biggest breach of U.S. medical data in history, exposing 190 million people's data.