UPDATE: This information came to me as an email titled
E-Verify is an Internet-based system operated by U.S. Citizenship and Immigration Services (USCIS) in partnership with the Social Security Administration (SSA). E-Verify is currently free to employers and is available in all 50 states. E-Verify provides an automated link to federal databases to help employers determine employment eligibility of new hires and the validity of their Social Security numbers.
Self Check is a service of E-Verify. Once you have confirmed your employment eligibility using Self Check, you are unlikely to encounter difficulties upon being hired by an E-Verify participating employer.