Isn't it even worse when only one party sponsors or works on something? It could signal that they are completely willing to ignore the sentiments of the other half the congress represents.
If only one party wants something, the other party will loudly and thoroughly catalogue everything wrong with the idea and throw extra at it to see if the smear sticks. There'll generally be loud warnings of a problem.
If they are cooperating, that means it might be something really nasty that, eg, lobby money from the military-industrialists supports.
Well, it's more like each party has a core 25 to 30% and the rest are independent moderates and then the core of the other party --so when one party does something it's more or less representing 25 to 30% of the voting pop. So the other are 70 to 75%
