FILE - In this July 30, 1965 file photo, President Lyndon Johnson signs the Medicare Bill into law while former President Harry S. Truman, right, observes during a ceremony at the Truman Library in Independence, Mo. At rear are Lady Bird Johnson, Vice President Hubert Humphrey, and former first lady Bess Truman. When Johnson signed Medicare and Medicaid into law Americans 65 and older were the age group least likely to have health insurance.  (AP Photo)