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

Formed in 1961, the agency with a roughly $40 billion budget provides humanitarian assistance abroad and funds other projects ...

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.

Elon Musk has been named as a special government employee, which subjects him to less stringent rules on ethics and financial ...