As the Gulf oil disaster has grown, so has debate about whether regulation or tort liability is the most effective deterrent to such accidents.

FORBES: The Gulf Spill: Should Execs Be Personally Liable?

Instead, they would ultimately eliminate the unfunded liability of Social Security entirely, which would be the biggest reduction in effective government debt in world history.

FORBES: Gingrich Schools Santorum And Romney On Social Security

Effective September 30, 2002, actual basic pay data will be used to calculate the future liability for employment related benefits.

WHITEHOUSE: M-03-01, Business Rules for Intragovernmental Transactions, Attachment B | The White House