Barring an attack on the scale of 9/11 or worse on the homeland, which is entirely possible, the American public is no mood for a foreign ground war versus a nuclear power in Russia.
After the election, if Biden somehow manages to win, there will be nothing to stop Biden and the rest of Washington.
Over the summer if Russia marches across Ukraine, takes back Odessa and is possibly making a move on Kiev, then all bets are off.
A general strike would (and based on the reactions to the Canadian trucker strike, its what they fear most). 'A Bug's Life' (pre woke Pixar) comes to mind.