No sooner did the Federal Reserve reveal its plan for eventually tightening U.S. monetary policy than many on Wall Street flagged problems with the mechanics of the strategy, and said more adjustments would have to come. Some market participants worried that a new limit on the Fed's reverse repurchase facility would hurt efforts to raise interest rates as quarters draw to an end when investors typically hunt for collateral. Others predicted the controversial tool would ultimately play a bigger role than the U.S. central bank let on. In reverse repos, the Fed offers Treasury securities as collateral in exchange for ... (full story)