A legal analysis by the Maricopa County Attorney's Office asserts that Arizona's new immigration law will be difficult to enforce because it is based on outdated sections of federal law with very narrow legal parameters.

The analysis was presented Friday to 16 prosecutors from across the state during a training session for the Arizona Prosecuting Attorneys' Advisory Council, known as APAAC.

Neither interim County Attorney Rick Romley nor the deputy county attorneys who made the presentation would comment. The Arizona Republic obtained a copy of it through a public-records request to APAAC.

The analysis resembles an evaluation made by law professors at the University of Arizona, which also pointed out potential enforcement problems with Arizona's new immigration law.