Granting and extending amnesty were probably two of Reagan's and Bush's biggest mistakes as Presidents. But, in their case, the measure had support on both sides of the aisle and, unlike King Obama, Presidents Reagan (who disagreed) and Bush (who I'm not sure about his position on the matter) allowed themselves to be persuaded by others in their own party...because, hey, they knew how to play with Congress. The measure was a disaster and illegal immigration exploded after it became law.
I'm in favor of repealing their executive actions and the Immigration and Control Act of 1986.
By the way, where is Obama's Immigration and Control Act of 1986, upon which he's deciding to go it alone? Where is his bi-partisan support? Yeah, not so much. Perhaps he should take a chill pill and try to persuade Congress instead of mocking and provoking them.