RINOS and RATs

I think most of us are familiar with the derogatory acronym RINO - Republican in Name Only. I'll now add another one, for which I can sadly take no credit: RATS - Republican(s) Agreeing to Surrender. Lugar, Voinovich, Hagel, and now Domenici can all be classified as this rare species of vermin.

I've never been particularly fond of the term RINO just because "in name only" is really a matter of perspective and opinion - because I'm not unflinchingly pro-life or anti-immigrant, some might call me a RINO. RATS, however, seems far less subjective. (But perhaps change agreeing to amenable?)