Capital One's representatives did not respond immediately to a request for comment.
The lawsuit provides some insight into some of the details the Congressional committees wanted to raise about Mr. Trump's finances, as well as their strategy of blurring lines between Mr. Trump as President and as a private citizen.
One of the entities that Congress members have searched for is Mazars USA, the president's long-time auditing firm. On April 22, Trump filed a lawsuit to prevent Mazars from responding to a summons from Representative Elijah E. Cummings of Maryland, chairman of the House Oversight and Reform Committee.
From the late 1990s, it was the only financial institution that wanted to do business with Mr. Trump. Other Wall Street banks shunned him after a series of defaults and bankruptcies that cost them hundreds of millions of dollars in losses.
From 2011, the Trump relationship was handled by Deutsche Bank's private banking department, which focuses on Deutsche Bank. Ultrawealthy This business provided more than $ 300 million in loans to Mr. Trump and his companies. This made Deutsche Bank its largest creditor. The bank was also an important lender to Mr. Trump's son Donald Jr. and to the family of his son-in-law Jared Kushner.
However, according to the lawsuit, officials from the Presidential Union attempted to block the Trump organization from receiving information from congressional officials.
She learned from Deutsche Bank that the request contained financial information relating to "parents, subsidiaries, affiliates, branches, departments, partnerships, real estate, groups, special purpose vehicles, joint ventures", predecessors, successors or any other legal The person in whom they have or had a controlling interest, "the lawsuit states.
The bank had intended to respond on May 6, the lawsuit states.