WASHINGTON (AP) — U.S. states face long-term budget burdens that are already limiting their ability to pay for basic services such as law enforcement, local schools and transportation, a report released Tuesday said.

Aging populations and rising health care costs are inflating Medicaid and pension expenses. At the same time, revenue from sales and gas taxes is shrinking. And grants from the federal government, which provide about a third of state revenue, are likely to shrink, the report said.