According to my quick check at the time zone selection on my computer, any of the following would be possible:
Asuncion
Atlantic Time (Canada)
Georgetown, La Paz, San Juan
Manaus
Santiago
I'll throw another in...a boat in the Atlantic.
As far as my answer to the question, I'd be tempted to agree with the Quaker gun, but I think the environmentalist side of him would be against felling a tree. He does like to be on camera, so perhaps if the question were put to him orally, he'd say a
Canon HL X1S (this misses the date range by a bit). Of course, I think as an actual response you would likely receive something general about the need for change in healthcare and economics, and the original question would be dodged or forgotten. Perhaps he'd mumble something about it not being on his teleprompter.
Overall, I don't think he'd care for any cannon, so I wouldn't bother asking him. There have been many Presidents who would gladly answer that question, and could even instruct most of those on this board on cannons and their use, but he's not one of them. I think the original intent of this thread was to get reactions such as those already given, which is why I tried to avoid answering here at all. Hopefully I didn't go too far.