No it hasn't happened in our lifetimes. This should be massive. It is a constitutional crisis, technically. But none of the parties are engaging in this for those reasons. It is 100 percent pandering and grandstanding, and is only about bullshit electoral agendas. So it probably won't actually be anything, even though it is technically massive lol

Edit: the only important impact could be later on down the line. Like every escalation of cynical Republican pandering to their genuine fascist base. Eventually the hogs won't be happy until they order tge national guard to open fire on feds. Which will be mostly hilarious when it first happens. Itll be another Jan 6 kind of thing where its technically treason, but no one involved understands what they are actually doing or than it is treason or what comes next. They're just in it for the spectacle with no actual politics or understanding of the implications of the thing they're howling for