Plaintiffs lawyers in the 9/11 respiratory cases cannot pass on to clients some $6.1 million in interest costs associated with financing the massive litigation, Southern District Judge Alvin K. Hellerstein ruled Friday.

Even though lead lawyer Paul Napoli marshaled opinions by bar associations, court cases and experts to show that borrowing to finance litigation and passing the cost to clients is both legal and ethical, Hellerstein said he would not allow it.