In view of the growing impact of hedge funds on a variety of financial markets, the Securities and Exchange Commission (SEC) in October 2004 adopted a regulation that requires hedge funds to register as investment advisers, disclose basic information about their operations, and open their books for inspection. The regulation took effect in February 2006, but on June 23, 2006, a court challenge was upheld and the rule was vacated. S. 1402 and H.R. 2586 would reinstate the SEC's authority. H.R. 2683 would require defined benefit pension plans to disclose investments in hedge funds.