Only where that man's law is bad in principle (there's probably a really nice Latin phrase for that;-) but, those would be in cases where the principles of "nature and nature's God," emergency, and/or rationality "should" be preserved, over what passes for man's law.
I believe in being consistent with the principles and adjusting whatever truly should be adjusted as we go, pretty much as Washington referred in his farewell address, a responsibility in which our nation has been derelict.
After 200 years, things can get messed up and the nation should take a well meaning and well reasoning review - what are the chances of that? (How long did it take Byzantium to get Byzantine?)