Barr had no sense of urgency either. “Ah, we’ll see what the IG has to say. Attempted coups are not important enough to actually do something at this time. No hurry. Oh yeah, Mueller is a God and didn’t do anything wrong. His bias actions, just look that way. No harm, no foul. Press leaks, lying to the court, raiding houses five in the morning, pressuring witness to lie, who cares.”
I mean, it's like knocking off the queen in the first 5 moves; bzzt game over. Stupid rookie mistake by someone who didn't know the full extent with what he was dealing with. Once Trump reached the point of accepting that Mueller could go anywhere, indict anyone, fabricate/destroy/frame evidence and/or witnesses without restraint, then no one in Trump's family was safe from indictment.
It must have been a bitter pill to take, but Trump should be thankful he wasn't forced to resign and/or impeached. So, he gets to finish his term, and maybe even gain another 4 years, but the die is certainly cast. With respect to the border, it's clear he doesn't have support of the either the military or state security apparatus, so there won't be any kind of national emergency declaration.
Put yourself in Trump's shoes: If you knew that it was all over, but wanted to save face, how would you act? And please, don't take this as pointless criticism. Trump gave us 4, maybe 8 years, to prepare; with Kankles in from the git-go, we'd still be fluffing around the starting line. Now, no one has any excuse not to fully understand the full extent of the situation. (Hint: US goes down due to demographic poison pill combined with Chinese economic/technical ascendancy.)