I stumbled onto the pdf that 51 senators signed and was sent to the president, concerning the UN arms treaty. Just wanted to share it.
http://moran.senate.gov/public/index.cfm/files/serve?File_id=9cd86202-9498-47ca-8b8d-534bf60b52f7
http://moran.senate.gov/public/index.cfm/files/serve?File_id=9cd86202-9498-47ca-8b8d-534bf60b52f7