Axios

Angered over his midterm losses, President Trump announced Friday he was replacing Susie Wiles as White House chief of staff with longtime adviser Stephen Miller.

Why it matters: Trump is trading one of his few moderating forces with one of the most maximalist champions of his agenda, a striking signal that the president may double down on the hardline policies that helped Republicans lose control of Congress on Tuesday.

Congressional Democrats see a target-rich environment next year. But they're also worried that if they investigate everything, they may appear to investigate nothing.

Why it matters: Democrats want to move beyond the one-off hearings, fist-pounding document demands and subpoena threats that defined much of their oversight during President Trump's first term.

Between the GOP's thrashing at the polls, another one of President Trump's planned D.C. construction makeovers being halted and an uphill battle to overturn his conviction on 34 felony counts, this week has netted a string of setbacks for the president.

Why it matters: Trump's administration is entering its lame-duck era, facing criticism and potential investigations as its power to reshape the federal government dwindles.

• But Trump is showing little inclination to change course.