dcblogs writes: In the wake of the U.S. Supreme Court ruling Monday on Arizona’s immigration enforcement law, H-1B workers are being advised to keep their papers on them. About half of all H-1B visa holders are employed in tech occupations. The court struck down several parts of Arizona's law but nonetheless left in place a core provision allowing police officers to check the immigration status of people in the state at specific times. How complicated this gets may depend on the training of the police officer, his or her knowledge of work visas, and whether an H-1B worker in the state has an Arizona's driver's license. An Arizona state driver's license provides the presumption of legal residency. Nonetheless, H-1B workers could become entangled in this law and suffer delays and even detention while local police, especially those officers and departments unfamiliar with immigration documentation.