Despite President Donald Trump's administration informing federal agencies that responding to Elon Musk's "What did you do last week?" email is voluntary, Musk -- seemingly emboldened by Trump's public support -- is doubling down on his threats to federal workers.

The new strategy is in part meant to allow supervisors and agency heads to check whether employees’ work fits into the Trump administration’s goals and priorities, according to people familiar with it and records obtained by The Post