“The amendment, introduced by Colorado Senator Mark Udall, was an attempt to weaken Section 1031 of the NDAA bill, which would basically turn the entire “homeland” into a battlefield and allow the military to arrest individuals accused of being terrorists and detain them indefinitely without trial. Americans would be stripped of all constitutional rights and posse comitatus would cease to exist.”
http://www.prisonplanet.com/senate-rejects-amendment-to-indefinite-detention-bill.html
Both missouri senators voted against the amendment and against the bill of rights.