Aye, but Republicans are now obstructing uncontroversial nominees, too. The ‘Party of No’ is doing its best to make sure the American government cannot function. That's not the behavior of the loyal opposition, it is something far more sinister.
There is a line, no doubt, but I still believe they have an obligation to fight the good fight. Now if they fight the stupid and childish fight, that too will reflect on them, as if did the democrats.