Your premise is flawed from the start.
#1 - Obama will never resign
#2 - The laws will only be overturned if challenged in court AND overturned by the SCOTUS.
Your premise is flawed from the start.
#1 - Obama will never resign
#2 - The laws will only be overturned if challenged in court AND overturned by the SCOTUS,
OR,
Congress grows a pair and passes legislation cancelling/terminating/gutting all of Obama’s programs
Unconstitutional laws could also be specifically targeted by a constitutional amendment brought by an Article V Convention of States. Why would an unconstitutional law need a constitutional amendment to be overturned? Because a lot of issues derive from the gradual breadth of power the feds have assumed over time.
Depending on the law, the Constitutional amendment would need to address and specifically limit the scope of the federal government's power in things like the Commerce Clause or the Necessary and Proper Clause. Also flat out eliminating unconstitutional governmental departments by amendment and dramatically cutting the feds by at least 80% could do a lot to neutralize their harm.
Short of that, states can begin nullifying clearly unconstitutional laws.