I repeat my question (for the last time): How do you know the CFR is unconstitutional? In all likelihood, it probably is. But what gives you, or even the President, the authority to proclaim a bill unconstituional? If he wanted to veto it, he could have, for whatever reason. He could have vetoed it because he doesn't like the way McCain's veins stick out of his neck when he's angry. But he signed it as a political expedient, with the knowledge that some persuasive groups would take on the new law in the courts, and would probably bring it down. But I repeat: no one, other than the judiciary, can say for a fact whether such-and-such a law is unconstitutional. You say it is: That's your opinion. But that's all it is: a personal opinion.
How does anyone "know" anything? They use the knowledge and information which they do have to make a decision. The President has that power and is bound by his oath to exercise that power to preserve the Constitution.
The same oath binds every Congressman and Senator. Each of them has a duty to judge the Constitutionality of legislation for which they vote. How is this not obvious?
If you believe that the President has the power NOT to sign a given piece of legislation, please tell us what criteria he may use.