Just like the Ron Paul campaign, International Media covers more of what's going on in the US than the US Media does. So a couple weeks to book flights and get over to Arizona is an appropriate amount of time ahead of the press conference.
I just hope "Obama" doesn't pass another insane executive order to shut down the internet in the US before this happens. I'm not willing to make any bets agains it though. Can you imagine how it must feel to know you are an illegally seated POTUS with a severe "Executive Disorder" on a power trip!? I'd be willing to make a bet he'll either flee to Kenya or try to claim asylum.
"We are not human beings having a spiritual experience; we are spiritual beings having a human experience"—Pierre Teilhard de Chardin