New I-9 form was effective as of April 3, 2009 for verifying employment eligibility.

As of April 3, 2009, all U.S. employers must begin using the updated I-9 form for verifying employment eligibility. The I-9 system of employment verification, created by the Immigration Reform and Control Act of 1986, is the nation's sole mandatory employment eligibility verification program. All U.S. employers are responsible for the completion and retention of Form I-9 for each individual hired for employment in the United States, including citizens and non-citizens.