"The problem, of course is that such suits take time to percolate through the court system. Hopefuly King ( if he's serious) will start out by asking the courts for an injunction blocking implementation."
Joshuapundit: Obama's New Election Strategy: Amnesty By Executive Order "The president is also outright lying when he says this will make sense economically. At a time of high unemployment, it will simply price American citizens out of the job market in favor of illegal aliens willing to work for less pay and at worse conditions."
Under Article II, Section 3 of the Constitution, the president has the duty to “Take Care That The Laws Be Faithfully Executed”
"This provision was included to make sure that the president could not simply choose, as the British King had, to cancel legislation simply because he disagreed with it. President Obama cannot refuse to carry out a congressional statute simply because he thinks it advances the wrong policy. To do so violates the very core of his constitutional duties."