“If you could have one do-over as president, what would it be?” “I would say if I had one do-over, it would be: I would not have appointed Jeff Sessions to be attorney general,” Trump said. “Yeah, that was the biggest mistake.”Not Helsinki. Not Charlottesville. Not family separations.Not failing to drain the swamp, end the endless wars or repeal Obamacare. Not triggering the longest government shutdown in U.S. history to get funding for a border wall – or declaring a national emergency to divert money from the military. Not his quest to expel transgender service members, or his mockery of the #MeToo movement, nor his demonization of African American athletes.Not throwing paper towels at Puerto Ricans. Not firing James Comey as FBI director – or the other nine cases of possible obstruction of justice outlined in Bob Mueller’s report.'