As part of the service provided by an immigration lawyer, he or she also may offer pro Bono services to immigrants who are about to undergo some form of criminal prosecution. Some types of criminal proceedings include unlawful entry, DUI/DWI, drug possession, and rape or murder. The criminal justice system can make it difficult for immigrants to comply with their employment requirements. For example, an employer who requires an immigrant to obtain a work permit needs that person to submit fingerprints. If the fingerprints are submitted incorrectly, the employer may be able to use them to deport the worker to his home country.