Sen. John McCain (R-Ariz.) is proposing a greater federal commitment to people without health insurance on Tuesday, suggesting that it help funds states to set up non-profit risk pools to help Americans who are denied coverage or can’t afford it. McCain’s health-policy experts provided a ballpark estimate of $7 billion a year for the new federal commitment. “Cooperation among states in the purchase of insurance would … be a crucial step in ridding the market of both needless and costly regulations, and the dominance in the market of only a few insurance companies,” McCain says in remarks prepared for delivery...