FACT: E-Verify does not effectively root out all undocumented workers. Some undocumented workers will be erroneously confirmed as authorized to work. E-Verify cannot identify counterfeit, stolen, or borrowed identity documents. A worker may present “good” documents that check out through E-Verify, but E-Verify cannot confirm that the document belongs to the person presenting them.
FACT: E-Verify will erroneously report U.S. citizens and legal workers as unauthorized. Some U.S. citizens and other legal workers will not be confirmed and will not be allowed to work. Due to errors in the Social Security Administration (SSA) and DHS databases, some citizens and legal workers will receive tentative nonconfirmations (TNCs), or even final nonconfirmations, and will not be able to resolve the discrepancy or may not even know about the problem. They will be denied employment and paychecks.

More mythbusting facts and information about the E-Verify program can be found in this fact sheet from the Immigration Policy Center.

Source: AILA InfoNet Doc. No. 09070868 (posted Jul. 8, 2009)