AP, December 28, 2007
Starting in March, the National Immigration Institute will distribute the cards to record the arrival and departure of so-called temporary workers and visitors. They will replace a non-electronic pass formerly given to foreigners who cross into Mexico, which has proven “easily alterable and subject to the discretion of migration agents,” the institute said Thursday.
Mexico detained more than 182,000 undocumented migrants in 2006, mostly from Guatemala, Honduras and El Salvador en route to the United States. But many others cross legally from Guatemala and Belize to work or visit, and the new cards are meant to guarantee their security, the institute said.