A major plot element of Iron Man 2 is that the Department of Defense (presumably) is trying to seize his Iron Man suits, one of which they get their hands on via Colonel James Rhodes. However, the movie doesn't make clear what justification or law the DoD is doing this, considering that the suits are either the personal property of Tony Stark or the proprietary property of Stark Industries.
Does the original source for the movie or any extra material make this clearer?