Eleanor Pelta, the president of the American Immigration Lawyers Association, said temporary visa holders are not required to carry their documents in Arizona, but they "may feel more comfortable carrying paperwork showing their legal status" because of the ruling.

Pelta, an immigration attorney at Morgan, Lewis & Bockius, noted that the Supreme Court's decision "leaves a door open to challenge the 'show me your papers' provision as applied in a particular instance. It is possible that [the law] may still be challenged and struck down in another suit," she said.

Patrick Thibodeau covers SaaS and enterprise applications, outsourcing, government IT policies, data centers and IT workforce issues for Computerworld. Follow Patrick on Twitter at , or subscribe to . His e-mail address is .

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