Accusations fly over Benghazi e-mails

(CNN) – Few issues get the Republican base riled up as much as what they call a botched political response to the Benghazi attack that left four Americans dead including U.S. Ambassador Chris Stevens. The white house says questions are all asked and answered, but GOP lawmakers say they have evidence on two fronts now to show otherwise.

Now, there is new ammunition for Republicans.

CNN's Dana Bash reports.