President Donald Trump has begun his second administration with a series of controversial moves and decisions.

In separate negotiations, Canadian Prime Minister Justin Trudeau and Mexican President Claudia Sheinbaum have agreed with U.S ...

On Feb. 2, private actors employed by Elon Musk took over U.S. Treasury computer systems that control payments for government ...

Marco Rubio is now the acting head of USAID, the lead international humanitarian and development arm of the U.S. government.

NBC News' Valerie Castro explains the work of the U.S. Agency for International Development and the impact it will have if President Trump succeeds in closing it.