A lawsuit has been filed by billionaire investor Leon Black. He is seeking to block certain requests from a congressional committee. The committee had asked him to provide documents and testify about his dealings. This is part of a larger investigation into Jeffrey Epstein.

The committee's requests were made after Black allegedly refused to answer questions during a previous interview. His lawsuit claims that the requests are overly broad and unrelated to the investigation's purpose.

Further details about the lawsuit and investigation are available from the source. The case is currently before a federal court.