As much as I want to say that yes, he is opening himself up to impeachment by overstepping the Constitution and circumventing Congress by using Executive Orders in this situation.......it will never happen. Obama has about the same chances of being impeached as Ted Nugent has chance of being elected President.
I just hope more people wake up to the fact that the trampling of the Constitution is not a "liberal" thing.......Bush stopped just short of smoking a joint in the rolled up Constitution with the Patriot Act and Lincoln destroyed the Republic that had been intended by the founders when he decided that Federal authority overruled States Rights. The Government that was given birth by Washington, Jefferson, Adams and the other Founders is no more......
That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness.