What are the visa & residency requirements in Texas?

"In order to obtain a visa to enter Texas, applicants must first submit an application to the United States Citizenship and Immigration Services (USCIS). This application must include proof of identity, proof of financial support, and a valid passport. Once the application is approved, the applicant will receive a visa that will allow them to enter the United States. In order to apply for residency in Texas, applicants must first submit an application to the Texas Department of Public Safety. This application must include proof of identity, proof of financial support, and proof of legal status in the United States. Once the application is approved, the applicant will receive a residency card that will allow them to live and work in Texas," said another expat in Texas.