India, July 29 -- The US Federal Reserve is widely expected to keep interest rates unchanged when it announces its policy decision on Wednesday. However, this meeting is more uncertain than usual because Fed Chair Kevin Warsh has stopped giving clear guidance about what the central bank may do next.

Since Warsh became Fed chair in May, he has followed a policy of giving very little explanation and no forward guidance before interest rate decisions. Because of this approach, investors, economists and financial markets do not know what to expect, making this one of the most closely watched Fed meetings in recent months.

The Fed's policy-setting committee has 19 members, and at the June 16-17 meeting, they were evenly split on whether inte...