The U.S. Agency for International Development has been in the headlines following Texas billionaire Elon Musk's comments about the shutdown.

USAID programs include things like vaccination initiatives, which can help prevent the spread of diseases, but critics claim the spending is wasteful.

Dozens of senior officials put on leave. Thousands of contractors laid off. A freeze put on billions of dollars in humanitarian assistance to other countries. Over the last two weeks, President Donald Trump’s administration has made significant changes to the U.