Even as Mr Musk was speaking, workers at USAID ’s headquarters in Washington were being told not to come in the next day. Some 600 of the agency’s staff seem to have been locked out of their emails. That followed a weekend in which the agency’s website went offline;

Welcome to 538's politics chat. The transcript below has been lightly edited.

Microsoft founder Bill Gates sits down with TODAY’s Savannah Guthrie to talk about his new book “Source Code” and the early days that shaped his storied (and extremely profitable) career. He also opens up about why he thinks he would be diagnosed on the autism if he was born today,

Bill Gates told the co-hosts of "The View" on Tuesday that he was worried about Elon Musk and Donald Trump's efforts to scale back USAID, and said it could lead to "millions of deaths."