The Bush administration is expected to publish Tuesday [today] a second supplemental "Social Security No Match" regulation. The first rule, finalized in August 2007, has been held up in the courts. The regulation is an effort by the Department of Homeland Security to enforce immigration laws by imposing obligations on employers who receive a letter indicating that an employee's information does not match the Social Security Administration's. The Shuler-Tancredo bill contains language that would codify this controversial regulation.
Mandatory use of a federal database known as E-Verify (until recently known as Basic Pilot) to verify the employment eligibility of all workers is at the heart of a number of federal and state proposals. The Shuler-Tancredo bill (H.R. 4088) is the subject of a "discharge petition" gathering signatures in the U.S. House of Representatives, and there are other similar proposals under consideration in Washington. The state of Mississippi joined Arizona and Oklahoma in mandating the use of E-Verify by all employers while Idaho, Indiana, and Virginia recently rejected such proposals.
from Immigration Policy Center