In the spring of 2010 Mayor Coleman banned city workers from traveling to Arizona in a boycott over an Arizona law allowing police officers to demand documentation of citizenship of anyone suspected of being in the United States illegally. Coleman compared the Arizona measure to 19th-century laws that required freed slaves to carry emancipation papers. He said his boycott was intended to show Arizona that its law enforcing illegal immigration measures is not the American way. While travel by city workers to Arizona is prohibited, police officers will be able to travel for the purpose of criminal extradition. Contracts with Arizona companies will be reviewed on a case-by-case basis by the Mayor. Redflex Traffic Systems, which is based in Arizona, operates 20 red-light cameras in Columbus. The red-light cameras issue tickets to red-light runners, the program will not be rescinded as a result of the ban, and in fact the number of red-light cameras will double as recently approved by city council.