“Andrew McCabe to CBS News that he and other officials discussed removing the president via the 25th amendment”
One of the few times the POS was actually telling the truth. Why Trump didn’t fire Rosenweasel the day RR used Comey’s firing as an excuse to appoint Mueller is beyond me that’s for sure. A total set up and it has been a chain around Trump’s neck for 2 years.
To answer your question about why President Trump didn’t fire Mueller, the answer is clear. He was new in office, plus new to politics and the ways of DC. Obstruction of justice and impeachment threats were coming from senate REPUBLICANS. And his own legal team was advising him not to do it.