The amnesty is the Veteran's Heritage Firearms Act. It has been introduced often in that last few congresses but never goes any place AFAIK.
S. 798: Veterans' Heritage Firearms Act of 2011 (GovTrack.us)
NRA-ILA :: H.R. 420/S. 798, the "Veterans` Heritage Firearms Act
S. 798: Veterans' Heritage Firearms Act of 2011 (GovTrack.us)
NRA-ILA :: H.R. 420/S. 798, the "Veterans` Heritage Firearms Act