A book of First Class stamps http://imagefap.in.net/ imagefap celeb fakes The Fed’s own research suggests the bond-buying program has had modest benefits. But Ms. Yellen has argued the costs of running these programs are small. Inflation hasn’t taken off, as many critics of the programs predicted would happen. The dollar has been steady compared with other currencies even as the Fed has printed trillions more, despite warnings its value would collapse. However, some officials became worried earlier this year that the Fed might be stirring new financial bubbles.