Immigration authorities have begun issuing administrative subpoenas to residential landlords around the United States seeking complete tenant files, including leases, rental applications, forwarding addresses and identification documents. Copies reviewed by attorneys show the two-page requests are signed by officials in U.S. Citizenship and Immigration Services’ anti-fraud unit but lack a judge’s signature, raising questions about their enforceability. Housing lawyers say landlords who comply could expose themselves to Fair Housing Act claims because the subpoenas target information that can reveal national origin and family relationships. "Just because a landlord gets a subpoena doesn’t mean it’s a legitimate request," cautioned Tulane University professor Stacy Seicshnaydre. Property managers contacted by attorney Eric Teusink report confusion and, in many cases, an intention not to comply unless a court order is produced. The subpoenas represent a fresh tactic in President Donald Trump’s push to accelerate deportations. On the same day, ProPublica published internal blueprints showing the Internal Revenue Service is building an automated system that would give ICE on-demand access to the last known addresses of as many as 7.3 million taxpayers. The plan triggered the June departure of acting IRS general counsel Andrew De Mello, who had warned the data transfer lacked legal basis. Together, the landlord subpoenas and the IRS data-sharing project would hand immigration agents unprecedented access to private housing and tax records without routine judicial oversight. While ICE can ask a federal court to enforce the landlord subpoenas, no such suits are known to have been filed, leaving both initiatives poised to face legal challenges from privacy advocates and housing groups.