The Medicare Payment Advisory Commission (MedPAC) has identified two important problems with the Medicare+Choice (M+C) program: nationwide geographic inequity in government-financed benefits, and unequal government payments for M+C plans versus fee-for-service (FFS) Medicare in the same market area. MedPAC concludes that both problems cannot be solved simultaneously. We argue that both problems could be solved if Congress discontinued its policy of underwriting the cost of FFS Medicare. Instead, Congress should define a national entitlement benefit package and have all health plans submit bids on the package in each market area. The government's premium contribution should be equal to the lowest bid submitted by a qualified health plan in each market area. The contribution could be adjusted for health risk, the special obligations of FFS Medicare, and welfare enhancements associated with FFS Medicare that are valued by both beneficiaries and taxpayers but unrelated to beneficiaries' health status.