Pension Benefit Guaranty Corporation, like Fannie Mae and Freddie Mac, is a case of "too big to fail." At least various members of Congress see it that way. And they are planning a push for legislation designed to shore up underfunded multiemployer private-sector pension funds, but which would put taxpayers on the hook for billions, if not tens of billions, of dollars over the long term. Sen. Bob Casey Jr., D-Pa., and Reps. Earl Pomeroy, D-N.D., and Patrick Tiberi, R-Ohio, the driving forces behind this measure, seek to shift the primary responsibility of keeping pensions adequately funded from unions and unionized employers to the general public. It's another example of the bailout culture in action.