We have been in a constitutional crisis for a long time - it’s just that a lot of people haven’t realized it yet.
To be in a “constitutional crisis,” the citizens would have to awake from their comas and stupors. They’d also have to believe the constitution has meaning and a role in governance. They’ve been taught for two generations it’s a worthless piece of parchment written by old dead white men. So how in the world can the US have a constitutional crisis?