The bill enacts a new subpart within the Louisiana Revised Statutes, specifically addressing unlawful entry and reentry into the state by aliens. It defines key terms such as "alien," "unlawful entry," and "unlawful reentry," and establishes penalties for these offenses, including imprisonment and fines. The bill outlines that a first offense may result in up to six months of imprisonment or a fine of up to one thousand dollars, while subsequent offenses can lead to one to two years of imprisonment and fines up to ten thousand dollars. Additionally, it provides affirmative defenses for defendants who can prove lawful presence in the state or that their actions do not violate federal law regarding illegal entry.

Furthermore, the bill authorizes the governor to negotiate an interstate compact aimed at enhancing border security and deterring unlawful entry into Louisiana. This compact would facilitate cooperation among states to share resources and intelligence related to illegal immigration. The legislation also includes provisions to ensure that prosecutions cannot be abated or terminated based on immigration status determinations. The act is designed to take effect under specific conditions, including potential Supreme Court decisions or amendments to the U.S. Constitution that affirm state rights to manage unlawful immigration.