On March 1, Congressional Republicans released a report examining the impact of the national health care reform law on state health costs.  The Congressional Republicans’ report projects that the law’s Medicaid expansion will cost states $118 billion through 2023.  The GOP report also offers state-by-state cost projections for the Medicaid expansion.   

From the report:  

Medicaid, a shared state-federal program created in 1965, was originally designed as a limited safety net program for low-income Americans. Since then, however, it has been expanded to levels that have put this entitlement program on a spending trajectory that is unsupportable for federal and state taxpayers. While fewer than five million individuals used Medicaid services in the program’s first year, today nearly one in four Americans is on Medicaid. Over the next ten years, the federal government will spend $4.4 trillion on Medicaid—a substantial contributor to the growing $14 trillion national debt. And at the state level, Medicaid spending now consumes nearly a quarter of state government budgets—a significant driver of state budget crises.

Full Report: Medicaid Expansion: Costs to the States (PDF | 237 KB) 

United States Congress. (2011). Medicaid Expansionin the New Health Law: Costs to the States. Hatch, O. and Upton, F.