Israel pretty much has U.S. politicians wrapped around its finger. From Philip Giraldi at unz.com:
Predictably, however, the pledge did not please the state of Israel. For three decades, Israel has been urging the United States to use force to eliminate what it refers to as the Iranian nuclear weapons program, a program that does not exist and might never have existed. The nuclear weapons threat raised by Israel might be seen as a disinformational wedge issue to bring about the complete destruction of the Iranian military capability by the United States. Israel seeks to exploit its influence over the US government and media to bring that about.
STRAIGHT LINE LOGIC 