In fact, just recently, legislation was proposed to stip all inferiour courts of any jurisdiction pertaining to either flag burning or the Pledge of Allegiance (I forget which). However, that legislation didn't pass, and a great many here thought it was silly.
That notwithstanding, Congress could put the 9th Circuit Court on notice quite readily (if they so chose to) - and there aint nothing the Supreme Court could do about it.
Cool. Now THAT'S a nuclear option!
Not that this current group of sissies would ever do it...