TARP Oversight Enhancement Act - Amends the Emergency Economic Stabilization Act of 2008 (EESA) to bring under the oversight authority of the Comptroller General any entity participating in the Troubled Asset Relief Program (TARP) whose sole expenditure, transaction, or commitment to purchase (or any pattern of such): (1) exceeds $10,000, in aggregate; and (2) is not essential to ensuring the entity's recovery, restoring its solvency, improving its liquidity, enhancing returns for its investors, and increasing its net worth.