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 said he and Trump want to shut down the agency because of its purportedly “radical” work, but the controversy seems mired in partisan politics.