The House will vote Tuesday on a three-week continuing resolution that would cut federal spending by $6 billion. It is the second short-term resolution proposed by the 112th Congress. And though it is expected to pass the House comfortably, a number of conservative groups have come out against the measure.

Republican freshmen like Rep. Tim Huelskamp (R., Kan.) have said they will vote against it, arguing that a short-term spending bill forestalls a broader debate over meaningful budget reform and deficit reduction, and expressing concern that the pending measure does not contain any of the policy amendments including in the House’s long-term spending bill, H.R. 1, e.g., the defunding of the EPA and Planned Parenthood.

Today, freshman Sen. Marco Rubio (R., Fla.) announced that he “will no longer support short-term budget plans.” In a sternly worded press release, Rubio decried the spending debate in Washington as “absurd political theatre.” He slammed Democrats in Congress for failing to pass a budget last year and for refusing to propose meaningful spending cuts in recent weeks, and an “absent” President Obama for his “lack of leadership.”

“All this has led to a very predictable outcome: Washington politicians of both parties scrambling to put together two and three week plans to keep funding the government, while not fundamentally changing the behavior that has gotten us into this mess to begin with,” he said. “Running our government on the fumes of borrowed spending is unacceptable, short-sighted and dangerous. I commend the efforts of House and Senate Republican leaders to deal with this, but I did not come to the U.S. Senate to be part of some absurd political theatre.”

As Congress prepares for another recess next week, Rubio said lawmakers “should feel ashamed if they have to go home again, look their constituents in the eye, and explain why nothing is being done about our debt crisis.” They ought to be focused on a long-term solution for the remainder of the fiscal year so that the “real debate” can begin over how to save entitlements and reign in the skyrocketing federal debt.

“If we deal with these issues seriously and immediately, we can leave our children with a country better than the one we grew up in,” he said. “If we don’t, we will be the first Americans to leave our children worse off than ourselves.”