The Institute on Taxation and Economic Policy. June 2020. The Institute on Taxation and Economic Policy (ITEP) urged states to recognize the significant economic contributions of undocumented immigrants by expanding access to state Earned Income Tax Credits (EITCs) to filers using Individual Taxpayer Identification Numbers (ITINs). https://itep.org/beyond-scotus-states-recognize-need-for-more-inclusive-immigrant-policy/