A controversial Texas law allowing undocumented migrants to be arrested has been blocked by an appeals court hours after the Supreme Court did not block it from going into effect. A key hearing is now set for Wednesday to help sort it all out. NBC’s Morgan Chesky reports for TODAY. us polictics news A controversial Texas law allowing undocumented migrants to be arrested has been blocked by an appeals court hours after the Supreme Court did not block it from going into effect. A key hearing is now set for Wednesday to help sort it all out. NBC’s Morgan Chesky reports for TODAY.