Why did Mexico stop U.S. immigration into Texas?

Mexico stopped U.S. Immigration into Texas primarily due to concerns over the increasing number of American settlers, which threatened the Mexican government's control and the cultural integrity of the region. The influx of settlers led to tensions over issues like slavery, land ownership, and governance. In 1830, the Mexican government enacted laws to restrict further immigration and enforce its own regulations, aiming to maintain sovereignty and stability in Texas. Ultimately, these tensions contributed to the Texas Revolution and the eventual independence of Texas from Mexico.