The American Immigration Council published two fact sheets explaining how undocumented immigrants add value to the U.S. economy by paying taxes. The first fact sheet shows that millions of undocumented workers currently pay billions of dollars per year in taxes, and would contribute even more if they had legal status. The second fact sheet describes the purpose of Individual Tax Identification Numbers (ITINs), which are IRS tax processing numbers that ensure that all people, including undocumented individuals, pay into the U.S. tax system.