Let Wal-Mart fix U.S. healthcare

Wal-Mart has done more to expand healthcare coverage and lower health costs in the past year than any government program to come out of Washington in the past 10 years, says Jim Jubak, senior markets editor for MSN Money. In this column, Jubak says letting Wal-Mart run the U.S. healthcare system would fix many of the problems facing the industry today.