The U.S. Supreme Court on Thursday declined to block enforcement of an anti-money laundering law that forces millions of business entities to disclose the identities of their real beneficial owners to the Treasury Department,

The act aims to stop fraud and money laundering by requiring most U.S. businesses to disclose which owners control more than 25 percent of the stock or equity.

At the root of the cases before the justices is a question of whether 67 lawmakers is enough for a quorum when there's a vacancy in the 134-seat House of Representatives.