Your One Stop Paranoia Shop

Okay, so read this bit in Ann Althouse’s Dick Cheney’s Hawaiian visit:

5) Another very pretty girl whom I could only conclude was a Secret Service groupie. She came in and as I gave her a lei she held up her Bush Cheney sign and asked where she could get autographs from Secret Service guys. I pointed them out to her but told her I didn’t know if she’d have any luck. I saw her after the event and she had managed to get several!

So here’s the question from your shidoshi of paranoia:

    What can someone forge with a Secret Service agent’s signature?