It grants temporary nonimmigrant visas for specialized foreign labor. (inc.com)
Have you substantially complied with the United States immigration laws for your student nonimmigrant status during your stay in the United States? (money.stackexchange.com)
Among registrants who are in the U.S. legally, few have reported any problems; yet NSEERS registration is also required for nonimmigrant visitors in the country illegally; and many of the illegals who registered were immediately arrested and deported. (sciencemag.org)