Federal prosecutors have reportedly subpoenaed Kushner Companies, the real-estate business owned by White House senior adviser Jared Kushner’s family, over its use of an investment-for-visas program to finance a Jersey City development project. The subpoena, issued in May by the Brooklyn U.S. Attorney’s Office, concerns a development called One Journal Square that was reportedly partly financed by the EB-5 federal visa program, The Wall Street Journal reports. The program offers green cards to immigrants who invest at least $500,000 in certain U.S. businesses, and Kushner Companies came under fire for using the program to draw Chinese investors back in May. It was not immediately clear what potential violations are under review by the U.S. attorney, nor whether other Kushner Companies developments are under scrutiny. Emily Wolf, general counsel for Kushner Companies, issued a statement saying the company was “cooperating with legal requests for information” but had done “nothing improper” in its use of the EB-5 program.