http://www.prospect.org/webfeatures/...s-m-02-12.html
Two government officials have told the FBI that conservative columnist Robert Novak was asked specifically not to publish the name of undercover CIA operative Valerie Plame in his now-famous July 14 newspaper column. The two officials told investigators they warned Novak that by naming Plame he might potentially jeopardize her ability to engage in covert work, stymie ongoing intelligence operations, and jeopardize sensitive overseas sources......
One of the sources also asserted that the credibility of the administration officials who spoke to the FBI is enhanced by the fact that the officials made their statement to the federal law enforcement authorities. If the officials were found to be lying to the FBI, they could be potentially prosecuted for making false statements to federal investigators the sources pointed out.