Creates new provisions restricting the availability of public benefits to U.S. citizens

SB 1616 restricts access to Missouri's SNAP food assistance and MO HealthNet medical benefits for non-U.S. citizens, requiring applicants to prove citizenship, national status, or specific federal immigration eligibility. It mandates documentary proof (like driver's license documents or federal status verification) at application, with temporary benefits allowed via sworn affidavit for up to 90 days or until citizenship documentation is provided. The bill explicitly excludes emergency medical care, prenatal services, children's benefits (when applied for by a citizen parent), and certain other non-cash aid like unemployment or postsecondary education. It also requires state agencies to verify immigration status through federal systems like DHS's SAVE program but prohibits denying benefits based solely on data matching.