Can you imagine the lengths he will go to win? Will he get Russia to do more dirty work? Instruct the justice department to arrest his opponent? Issue an executive order banning anyone not born in the US from voting? Start another war?

By the time the courts order him to cease whatever unconstitutional effort he’s making to remain in office, the election may be over. Or he’ll just ignore the courts.

It’s almost too late for an impeachment. Besides, no president has ever been sent packing. Nixon resigned because he saw it coming. Trump would sooner start a civil war.

Also, being unstable is not an impeachable offense.