A supporter of the U.S. Speaker of the House Pelosi argues with an anti-President Obama protester while people wait for the Tea Party Express bus to arrive on the steps of the State Capitol in Denver

A supporter of the U.S. Speaker of the House Nancy Pelosi argues with an anti-President Barack Obama protester while people wait for the Tea Party Express bus to arrive on the steps of the State Capitol in Denver, Colorado March 31, 2010. The Tea Party movement is a grass roots right wing activist movement that has held a series of protests around the nation to voice their dissatisfaction with the government. REUTERS/Rick Wilking (UNITED STATES - Tags: POLITICS CIVIL UNREST)