But then, this goes back to the problem some liberals seem to have with simply thinking that their opinion and world view isn't just their perspective, but somehow objective truth.
For those types...."holding a budgetary measure hostage" in order to get things ADDED to it is perfectly fine. Such as when they worked to hold up and thwart the budget measure in 2007 for Iraq War Funding unless they got BILLIONS of additional completely unrelated add-on's...like aid for avocado growers or drought relief funds...along with demanding a troop withdrawal deadline of the end of 2008.
It was apparently okay for them to hold things "hostage" because to many liberals what they were doing was "good" and thus attaching "irrelevant political power grabs" to it was perfectly okay and not worthy of condemnation at all. It's only when you want to decrease funding in some fashion, or doing something that they view as "bad", that it suddenly is just beyond the pale to suggest a budgetary bill be anything but "clean".
Both parties routinely play politics with the budget, because that's the primary leverage point that the legislature has in providing a check to the executive branch. To expect the legislature, regardless of party, to just sit back and take it up the ass in accordance with what the Executive wants is not just laughable but is antithetical to the concept of checks and balances this country was established on.