[azhenfud]

"Your point #2 would require a constitutional amendment."

Not really, Congress has the power to make legislation that fits enforcement - but does not have the balls.

Section 5.
The Congress shall have the power to enforce, by appropriate legislation, the provisions of this article.

[Durus]

While congress has not hesitated in the last hundred or so years to pass legislation that clearly contravenes the Constitution I will not have any part of it. Even if the ends are important the means is far more damaging to the Republic.
The power to enforce the Constitution clearly does not mean the authority to change it at will. Any person born in the USA is a citizen period. I'm all for a Constitutional amendment that changes that.