1986: The I-9 is created by the Immigration Reform and Control Act. Job seekers may show any of 29 forms of identification to prove they are entitled to work.
1997: The Immigration and Naturalization Service writes an interim rule on the I-9, reducing the number of acceptable forms of ID to 27.
1998: INS proposes another interim rule on the I-9, reducing the number of acceptable IDs to 14, but it never "finalizes" either rule.
May 2005: The Department of Homeland Security releases an "updated" I-9 that does not include any of the changes proposed by either interim rule; it simply changes all references to "INS" to "DHS."
August 2005: INS’ successor agency, ICE, recommends that it "set a specific time frame for completing the department’s review of the Form I-9 process".
Source: "Weaknesses Hinder Employment Verification and Worksite Enforcement Efforts," U.S. Government Accountability Office, August 2005