Jimmy Hoffa to the U.S. Senate in the 1964 election. Hoffa spent the next three years unsuccessfully appealing his 1964 convictions. Appeals filed by his chief counsel, St. Louis defense attorney Morris Shenker, reached the U.S. Supreme Court. He began serving his sentences in March 1967 at the Lewisburg Federal Penitentiary in Pennsylvania. Just before he entered prison, Hoffa appointed Frank Fitzsimmons as acting Teamsters president. Fitzsimmons was a Hoffa loyalist, fellow Detroit resident, and a longtime member of Teamsters Local 299, who owed his own high position in large part to Hoffa's influence. Despite this, Fitzsimmons soon distanced himself from Hoffa's
James P. Hoffa pension, health and welfare benefits. "We…have negotiated an agreement that will greatly benefit our members at U.P.S. as well as Teamster members in other industries covered by pension and health and welfare funds." Teamster freight members ratified a new, National Master Freight Agreement (NMFA) in February, 2008. Covering 60,000 workers at YRC Worldwide, Yellow Transportation, Roadway and regional units at USF Holland and New Penn Motor Express. On February 20, 2008, Hoffa became the first major union leader to endorse Senator Barack Obama (D-IL) in his bid for President of the United States. Hoffa campaigned in major states for Obama