publicly asked about the operation for the very first time by spanish tv network univision. >> there may be a situation here in which a serious mistake was made. if that's the case, then we will find out and we will hold somebody accountable. >> on may 3rd, attorney general eric holder testified before the house judiciary committee. >> when did you first know about the program? >> i'm not sure of the exact date but i probably heard about fast and four russ for the first time over the last few weeks. >> rewind to a 2009 arms trafficking conference in mexico where holder delivered a speech not only acknowledging project gun runner, but bragging about its expansion saying, quote, my department is committing 100 new atf personnel to the southwest border in the next 100 days to supplement our ongoing project gun runner. just days ago brand new documents were leaked to news organizations that indicate that eric holder also new about the program by july of 2010, according to the dated memo to