A House subcommittee is reviewing dozens of expiring tax provisions. The political pressure to extend the subsidies en bloc is immense.
Tax deductions for an abortion and related tax breaks would be prevented under a House panel's bill. But Democrats in the Senate support the tax deductions.
Democrats are expected to lose House seats in Election 2010, but in districts where demographics are shifting their way they are working to upset Republican incumbents. California's Third District is one.