Elon Musk faces intense criticism from Rep. Ro Khanna over USAID cuts linked to millions of deaths. The heated social media feud escalates with Musk threatening legal action and Khanna challenging him to a debate.

SpaceX’s stock has sunk more than 31% since hitting a peak of $225.64 on June 16, dropping Musk’s estimated net worth from an all-time high of $1.45 trillion to just under $1.1 trillion Monday. Monday’s drop alone wiped out more than $152 billion from Musk’s net worth, according to Forbes estimates.