and 5,000 head of cattle. Bustamante implemented other measures to make immigration less desirable for Anglo-Americans. He rescinded the property tax law, which had exempted immigrants from paying taxes for ten years. He further increased tariffs on goods entering Mexico from the United States, causing their prices to rise. The 1830s laws also brought settlement contracts under federal rather than state control. Colonies that did not have at least 150 inhabitants would be canceled. Among the affected colonies were the Nashville Company run by Sterling C. Robertson and the Galveston Bay and Texas Land Company, run by David G. Burnet, Lorenzo de Zavala and Joseph Vehlein. Finally, he prohibited further immigration to Texas from the United States, although Anglos would still be welcome in other parts of Mexico. The ban and other measures did not stop U.S. citizens from migrating illegally to Texas by the thousands. By 1834, it was estimated that over 30,000 Anglos lived in Texas, compared to only 7,800 Mexicans. Anglos often viewed the Mexicans as foreigners and intruders. The feeling was often returned; Rafael Antonio Manchola, son-in-law of empresario Martín De León, served as the commander of the presidio at La Bahia from 1828 to 1830 and then as the alcalde of Goliad. He warned the military commander for Texas that "'No faith can be placed in the Anglo-American colonists because they are continually demonstrating that they absolutely refuse to be subordinate, unless they find it convenient to what they want anyway, all of which I believe will be very detrimental to us for them to be our neighbors if we do not in time, clip the wings of their audacity by stationing a strong detachment in each new settlement which will enforce the laws and jurisdiction of a Mexican magistrate which should be placed in each of them, since under their own colonists as judges, they do nothing more than practice their own laws which they have practiced since they were born, forgetting the ones they have sworn to obey, these being the laws of our Supreme Government.'" International issues Many Americans thought the United States had been cheated out of Texas. American land speculators believed they could make fortunes in the vast region of Texas, and American politicians believed Texas could help maintain a balance of power between free and slave states. In 1827, American president John Quincy Adams offered US$1 million for Texas.