Well there is nothing that Obama is doing that can't be undone by a New President.
A new President could get rid of Obama's Executive order and order that Illegals are to be immediately deported.
One thing I am fairly certain of, if Obama does do this, I think any cooperation between Obama and Congress is dead for the foreseeable future.
Obama will not only be a dead duck but he will be a very dead duck and will never flap his wings again.
Maybe we will get lucky and Congress will defund Obamacare and when Obama Vetoes it the Government will shut down.
Congress also needs to not approve Military action against ISIS or anyone else Obama wants to fight.
Everything Obama wants Congress needs to Vote against.
Are there any Appointments that will be coming up after the Republican Controlled Congress takes Power?
I consider Obama's use of Executive Orders to be an Act of War against the People and the Constitution, and Congress needs to play tough, Full Contact, Pull no Punches and make the Obama Administration Bleed.