It's a truism that the IRS is the only government agency that takes in more than it spends - as much as $10 in tax for every dollar spent on enforcement.

But House Republicans are trying to cut the IRS enforcement budget by $600 million.  They allege abusive enforcement. But because the IRS is charged with enforcing the individual mandate under health care reform, some Democrats think this is a back-door approach to defunding health care reform.

So who in Congress is going to stand up to defend the IRS?