I favor any and all methods of discovering who intends to harm this country, regardless of whether our borders are ironclad. The terrorists who perpetrated the 9/11 attacks entered this country legally. Now that's not to say that I don't want our borders secured. At the same time, I'm totally realistic about it; no matter how hard we try to secure the borders, terrorists will still find a way in.
No one believes in, nor embraces the Constitution more than I, but again, I am realistic about it. It might be nice and idealistic if we could take the Constitution at its word, and again, let me reiterate, would that it were possible. However, the world, life and reallity just isn't that simple. Many if not all the provisions of the Constitution and Bill of Rights have been modified, explained, exempted, interpreted and nullified to some degree. I don't necessarily think this is a good thing, but it is reality and I learned a long time ago that living with reality is better for me than living within a fantasy.
Fantasy is believing that our government is a bigger enemy than the islamo terrorists. Fantasy is believing that you can tie the hands of those who are responsible for this countries safety and expect that they can do their jobs. Fantasy is believing that our government officials are somehow more intent on violating our rights and liberties than on protecting this country. Fantasy is believing that everyone can always get it right and " right" will always be what we think it should be.
I am sure that the government has violated the strict intent of the Constitution many times and that is wrong. But we are dealing with an element that was never contemplated by the strict originalist version of our Constitution. It is just possible that we could have remained right, but it's also very possible that we could be DEAD right.