Come on now. You're not gonna play word games are you. Congress passes the laws, the executive enforces them. The U.S. Attorney General reports to who? The U.S. borders are secured by who? The Commander-in-Chief is who?
No, I am not going to play word games. I am honestly seeking the parts of the Constitution Bush is violating or the laws he is violating that require his impeachment or scorn. Which laws say the borders are to be secured?
There are immigration laws that say who can and who cannot come in, and the procedures for doing so, but no law comes to mind about securing the borders. I think it has just always been understood to be that way until we had, and are having, this mass invasion. Except in times of war, and we are at war now, we didn't really have a problem until the last twenty years or so.
I am not saying there is no such law, just that I can't recall one at the moment.