I have heard some people talking about a freedom act. Supposedly, one can request a copy of all immigration stuff that U.S. government has about you. Probably the originals or copies of all application one ever submitted, data from border security, etc.
It should be free. Has anyone ever tried that? I wonder for what purposes should this be useful.
Could also one request to erase some of the information they have about him? This is just for a curiosity.