The short version is that the chair of the House Appropriations Subcommittee on Energy and Water, David Hobson (R-Ohio) released the chair's mark of the 2005 Energy and Water Appropriations bill, in which he cut ALL of the administration's request for new nuclear weapons programs. A huge rebuke at the hands of his own party!
I wrote this up in detail on my blog: notsoforeignpolicy. Check it out. I am very interested in the opinions of Kossacks on my efforts over there.