For liberals alarmed by Donald Trump's election, there is something heartening about the revelation that the new president has no idea what he's doing. His rollout of new travel restrictions aimed at offering a constitutionally, economically, and diplomatically viable alternative to his campaign pledge of a total ban on Muslim entry to the country has been shambolic. It has spurred judicial and political mobilization against a sloppy and ill-conceived policy, which will likely end up with Trump accomplishing much less harm than he could have with a more measured approach.
All in all, Trump's stumbles raise the prospect of what Dylan Matthews calls the "Carter Scenario," in which a president who is simply bad at presidenting manages to not get very much done and blow the opportunity for a newly empowered legislative majority to enact historic change.
What you make of that will, of course, depend on your prior ideological commitments. What should be viewed differently is the reality that all presidents end up needing to deal with crises of one type or another. So far, Trump has exclusively faced crises of his own creation, and he's handled them disastrously.
Americans of all stripes ought to worry about what's going to happen when he faces a real one.
Even a criminal president can be counted on to deliver a certain measure of economic prosperity and global stability, for the simple reason that incentives are properly aligned. A president prone to making mistakes, however, can easily doom us all.