Evidently the whole purpose of the law prohibiting collection that involves U.S. persons evades the rest of the posters due to the politics of a momentary concern. 20 years from now no one will give a shit about some letter to Iran, but they will definitely care that Big Brother has the telescreen operating against all of us including Senators. Can't allow thoughtcrime after all.
The law as it is structured is extremely concerning. Your lack of understanding of it and your selective outrage isn't helpful though.
You should be pushing to change the law, not making up bullshit accusations based in your lack of understanding of the law.