The main purpose of this legislation, titled the "No CDLs for Illegals Act," is to tighten the requirements for issuing commercial driver's licenses (CDLs) in the United States. It aims to prevent unauthorized individuals, particularly those who are not legally in the country, from obtaining these licenses. Key provisions of the legislation include new requirements for individuals applying for a CDL. Applicants must provide valid documentation that proves their citizenship status, lawful permanent residency, or valid work authorization.