
The Internal Revenue Service and U.S. Immigration and Customs Enforcement (ICE) are working on an agreement under which the IRS would use the tax data of people suspected of being in the country illegally in order to authenticate names and addresses.
The agreement would allow the IRS to cross-reference names submitted to them by ICE with confidential internal tax data, according to four sources familiar with the agreement who spoke to The Washington Post on the condition of anonymity.