Citizens' organizations cropped up in Loudon and Prince William Counties outside Washington, and then pushed for new policies requiring police to ask suspects about their immigration status if they believe there could be a question.

The movement was spreading to Maryland, where a protest was held Saturday at a day-labor job center in Montgomery County where immigrants gather to seek odd jobs, The Washington Times reported.

A Prince William County Supervisor told the newspaper a local citizens' group played an active role in stirring up publicity about illegal immigration in the area and providing statistical support that helped lead to passage of the new rules.