In 2007, when Virginia's Prince William County ordered police to check the immigration status of anyone they had "probable cause" to suspect was in the U.S. unlawfully, the impact was swift at family restaurant Ricos Tacos Moya.
"Suddenly nobody showed up," says Stacey Moya, an employee, and daughter of the owner. "Nobody was around. Not one soul. We would go hours without any customers, any clients. Nothing."
The website of New York's Journal News newspapers has posted an interactive map showing the names and addresses of people with licenses to own handguns in three counties just to the north of New York City — Westchester, Rockland and Putnam.
Washington, D.C., city police are investigating whether NBC News' David Gregory broke the district's laws when he displayed what he said was a "magazine for ammunition that carries 30 bullets" on Sunday's edition of Meet the Press.