Regarding Kickstarter, Sauropod Studio just successfully raised $702,000 for Castle Story despite being based in Montreal. It probably requires some significant extra work, but it's certainly possible.
If you can't provide proof of US citizenship there's no way you can be approved for Amazon Payments and launch a Kickstarter project. The only way to do so is to find someone in US willing to participate in your project. I assume for a fee.
http://www.kickstarter.com/projects/902505202/castle-story