Will money market accounts, such as Vanguard's VMFXX, remain safe and stable?

Given everything that's going on, my wife has been pressing me to decide whether we should continue holding all of our liquid savings in Vanguard's VMFXX fund. It's a fair question.

Currently, nearly six figures—about 70% of our liquid assets—are invested in VMFXX. While I'm not overly concerned at the moment, the recent string of the Trump's administration questionable actions has left me feeling less than 100% confident.

Should I, and others, be concerned? What should we be keeping an eye on?