A House subcommittee has announced a probe into a ruling that will give the banking giant Citigroup billions in new tax breaks that could be worth more than the bailout money Citigroup is paying back. Last Friday, the Treasury Department quietly changed a longstanding law so Citigroup could keep $38 billion in tax breaks that would decline in value when the government sells its $25 billion stake. Companies can pay less taxes to account for prior losses, but not when they’re sold to new ownership, as the Treasury plans to do. Announcing the probe under the House Oversight Domestic Policy Subcommittee, Congress member Dennis Kucinich called the Citigroup ruling an “outrage” and a “farce.”