Federal Reserve Vice Chairman Stanley Fischer sounds concerned that the central bank may lack some key tools needed both to prevent another financial crisis and to contain the fallout should one occur, Bloomberg News reported yesterday. He said in a speech on Sunday that the Fed is not as well-equipped with regulatory powers to rein in housing and other asset bubbles as some other central banks. And he questioned whether Congress had gone too far in limiting the Fed’s ability to intervene if a crisis erupted and threatened the financial system. "We won’t know until it’s very late" whether the Fed has been constrained too much, Fischer said. That’s something "we have to worry about a great deal." In arguing that the Fed has less leeway to restrain speculative excesses than other central banks, Fischer pointed in particular to the property market, the epicenter of the last financial crisis. Faced with run-away real estate prices, many other countries have tightened loan-to-value or debt-to-income ratios to curb borrowing.