This trick didn't work last year, but now Rep. Ron Paul (R-Tex.) in the House and his son Sen. Rand Paul (R-Ky.) in the Senate introduced this week father-son dual bills to audit the Federal Reserve. From a Campaign for Liberty press release:

The bills, both titled The Federal Reserve Transparency Act of 2011, but known better as “Audit the Fed,” are numbered H.R. 459 in the House and S. 202 in the Senate and continue the efforts championed by Ron Paul last year that won 320 co-sponsors before passing the House and 32 cosponsors in the Senate before falling short on a floor vote.

H.R. 459 starts the session with 56 original bipartisan cosponsors, while Sen. Jim DeMint (R-SC) and Sen. David Vitter (R-LA) are original cosponsors for S. 202.

The Federal Reserve Transparency Act of 2011 would open up the Fed’s funding facilities, such as the Primary Dealer Credit Facility, Term Securities Lending Facility, and Term Asset-Backed Securities Lending Facility to Congressional oversight and audit by the non-partisan Government Accountability Office. Additionally, audits would include discount window operations, open market operations, and agreements with foreign central banks such as ongoing dollar swap operations with European central banks.

Public polling conducted by Rasmussen Reports in December 2010 indicated that 74 percent of the American People demand transparency at the Fed and support a full audit as called for in the Audit the Fed legislation. In 2009 and 2010, Campaign for Liberty generated over 2.5 million grassroots contacts to federal lawmakers in support of Audit the Fed...

The Wall Street Journal notes the bills, with comments from Ron Paul:

Rep. Paul introduced legislation calling for the same audit of the Fed on the House side, which is similar to legislation that he has pushed for as a House lawmaker. As part of the financial regulatory overhaul, Rep. Paul wanted to give congress the power to audit the fed’s interest rate decisions. But the measure never made it in the final version of the bill.

“I was very pleased that so many of my colleagues were willing to stand up for transparency and accountability in government,” Rep. Paul said. “I am optimistic about our prospects for a full and complete audit in the 112th Congress.”

My Reason magazine feature from November 2009 on the anti-Fed movement and Ron Paul's role in it.