Relating to the unlawful possession of a firearm by a person not lawfully present in the United States; creating a criminal offense.

This bill (SB 1900) creates a new criminal offense under Texas law: it makes it a felony for a person not lawfully present in the United States to possess a firearm. Specifically, it amends the Penal Code to add Section 46.04(a-2), which defines this possession as a third-degree felony. The bill does not change penalties for other firearm offenses (like unlawful possession by a convicted felon, which remains a misdemeanor under existing subsections). This law directly affects undocumented immigrants who possess firearms, making such possession a felony rather than a lesser offense.