CNN reports on the Blackwater hearing: "The testimony took a partisan tone at times with Republicans defending Blackwater's service and Democrats questioning Prince's political contributions in the past."

But as our Spencer Ackerman reports, the only person to question Blackwater's political contributions was Rep. Darrell Issa, the California Republican, in a move that clearly backfired. Watch the video.

[Thanks to TPM Reader MF for the catch.]