The special interest driving federal spending? Big Labor

The union bosses spent more than $500 billion on campaign donations between 1989 and 2009, with well more than 90 percent of the total going to Democratic presidential and congressional candidates. That's more than 10 times as much as was spent by Big Oil during the same period, according to federal campaign finance data compiled by professor Antony Davies of Duquesne University. In fact, Big Labor gave twice as much as the totals for the Big Oil, telecommunications, insurance, pharmaceuticals and real estate industries combined.