WASHINGTON – Congress' budget scorekeepers are taking a new look at President Barack Obama's health care law — and they still say it is expected to reduce federal deficits.

It's the first in-depth look by nonpartisan experts since the Supreme Court upheld most of the law last month.

The court made one exception: States don't have to sign on to a planned expansion of Medicaid for their low-income residents. The Congressional Budget Office said Tuesday that that could reduce the number of people covered by several million. But taxpayers would also save on costs.