Yes, you need to be from the US: http://www.kickstarter.com/help/faq/creators#EligRequ
There are other platforms, http://www.indiegogo.com/ for example, for projects outside of the US. They're somewhat less well adopted but it's definitely an option.
Then again, many people already sort of backed the project via pre-orders, so I'm not sure there's more money in a kickstarter-like campaign.
Edited 8 years ago