The Teamsters Union is one of the largest labor unions in the world, as well as the 11th largest campaign contributor in the United States. While they supported Republicans Ronald Reagan and George H.W. Bush for President in the 1980s, they have begun leaning largely toward the Democrats in recent years; they have donated 92% of their $24,418,589 in contributions since 1990 to the Democratic Party. Though the union opposes Pres. George W. Bush's agenda to open US highways to Mexican truckers, it has in the past supported Bush's platform for oil drilling in the Arctic National Wildlife Refuge. [3] On July 23, 2008, however, Hoffa announced the union's withdrawal from the coalition favoring drilling there. Speaking before environmentalists and union leaders assembled to discuss good jobs and clean air, Hoffa said, "We are not going to drill our way out of the energy problems we are facing -- not here and not in the Arctic National Wildlife Refuge."[4]
The Teamsters Union endorsed Barack Obama for the 2008 Democratic Nomination on Feb. 20, 2008