So long as their laws do not contradict national laws, state governments can prescribe policies on commerce, taxation, healthcare, education, and many other issues within their state. Notably, both the states and the federal government have the power to tax, make and enforce laws, charter banks, and borrow money.
Credit khan academy
Because it would be a crime to not return a slave or report it, making it so anyone would have to report it and slave would be captured a lot easier. That is why they like the fugitive slave act.<span />
Tension between Anglo-American settlers and the Mexican government can be traced back to the 1820's, when the Fredonian Rebellion and disagreements about slavery took place.
However, one of the early turning points was the law of April 6, 1830, which encouraged Mexican and European families to migrate to Texas, while stopping immigration from the United States. Taxes to all foreign goods were also added.
New military forts were built to make sure the law was being followed, but Mexican officers never trusted the Anglo American settlers, who were in turn upset by the new law. U.S. officers, on the other hand, did not cooperate to stop American immigrants.
Eventually, the ban could not be enforced and their relationship worsened.