Democratic lawmakers have requested thousands of pages of documents pertaining to properties owned by Kushner Cos. in Maryland.
U.S. Sens. Ben Cardin and Chris Van Hollen, and U.S. Reps. Elijah Cummings, Dutch Ruppersberger, John Sarbanes and Anthony Brown, sent a letter to Kushner Cos. on Friday.
President Donald Trump's son-in-law stepped down as CEO of the company earlier this year before becoming a senior adviser in the White House, but still has financial interest in many of its properties.
News outlets have recently reported that the company routinely seeks to arrest tenants who owe money, and that tenants have reported sub-standard conditions in the housing complexes.
Kushner Cos. owns properties in which residents use housing vouchers. In a statement, the company's general counsel Emily Wolf says it is in compliance with federal requirements, and that the company uses legal measures "only as a last resort."