The White House may soon call on U.S. banks to collect and report citizenship data on their customers as part of the Trump administration’s crackdown on undocumented immigrants, according to new reporting by The Wall Street Journal. 

The discussions have unsettled banks that have been informed about the plan, which could require lenders to obtain passports and other documentation from new account applicants and existing clients, the Journal reported. The news outlet said President Trump could sign an executive order or otherwise direct the Financial Crimes Enforcement Network (FinCEN) to impose the obligation on banks. 

Under the latter scenario, banks would be required to report the information to FinCEN as part of their compliance with existing U.S. anti-money-laundering and counterterrorism financing laws, which already obligate financial institutions to inform the bureau of the suspicious activity and large cash transactions of their customers, the Journal said. 

The Trump administration has recently turned the powers of the Treasury Department on welfare fraud in Minnesota, after investigations in recent years indicated that Minnesotan residents of Somali descent were involved in some of the scams, the newspaper noted. 

Read more at The Wall Street Journal