http://www.cbsnews.com/8301-503544_...ous-wiretap-information-obtained-by-congress/ June 5, 2012 2:37 PM Fast and Furious wiretap information obtained by Congress By Sharyl Attkisson Topics Congress . Updated 4:32PM (CBS News) The lead House Republican investigating Operation Fast and Furious, Rep. Darrell Issa (R-CA), today said senior Justice Department officials had specific information that their federal agents were using controversial "gunwalking" tactics. Justice Department officials have consistently denied that was the case. But today in a letter to Attorney General Eric Holder, Issa revealed that he has reviewed sealed wiretap applications in the case, which were signed off on the authority of Holder's Assistant Attorney General Lanny Breuer. Issa wrote Holder "having seen the wiretap applications, we now know that the information coming from the (Justice) Department has been misleading. That must stop."