THE QUESTION: Whether to expand Medicaid, the federal-state program for the poor and disabled, could be the most important decision facing governors and legislatures this year. The state expansions are a key part of the health care overhaul.
THE PROMISE: If states expand their Medicaid programs to cover millions of low-income people now left out, the federal government will pick up the full cost for the first three years and 90 percent over the long haul.
THE WORRY: A major concern for states is that deficit-burdened Washington sooner or later will renege on the 90-percent deal. The regular Medicaid match rate averages closer to 50 percent.