Texas wants to arrest immigrants in the country illegally. Why would that be such a major shift?

[George4]

Texas wants to arrest immigrants in the country illegally. Why would that be such a major shift? Immigration laws are federal laws not state laws and enforcement of immigration law is the domain of federal law enforcement. Homeland Security agents and officers are responsible for arresting migrants who are caught crossing the U.S. border illegally, whether from Mexico or Canada. They're also responsible for arresting and deporting people who are in the country illegally.