WASHINGTON — Virginia state police say they stopped four tractor-trailer drivers participating in a protest convoy on the Capital Beltway outside Washington.

Police say the drivers were pulled over after they began driving side-by side across all four northbound lanes of the Beltway in Fairfax County shortly before 9 a.m. Thursday, slowing traffic to about 15 mph. Officers warned the drivers not to impede traffic and did not write any tickets.

Police say a convoy of about 30 trucks began traveling north on Interstate 95 from Doswell, Va., on Friday morning. The truckers are circling the Beltway.

Organizers say the truckers are protesting unconstitutional actions by the federal government, including the health care overhaul and the Patriot Act. They are calling for President Barack Obama to be removed from office.

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