Every project tries to raise funds via international investors. They usually don't allow both US and China residents to participate in their sales.
So, as far as I understand, you are not interesting in US investors form this forum, because I don't think that they will invest much, but the slot will be used.
We are planning on taking both Chinese investors and US investors and from many other countries. And we never really expected to get investors from the US from the Bitcointalk forum. But if we do they must be an accredited investors. OR.... we can take 35 non-accredited investor FROM THE US.
Here is the SEC says about taking non-accredited investors from the US.
The company may sell its securities to an unlimited number of "accredited investors" in the U.S. and up to 35 other purchasers in the U.S.. All non-accredited investors, either alone or with a purchaser representative, must be sophisticatedthat is, they must have sufficient knowledge and experience in financial and business matters to make them capable of evaluating the merits and risks of the prospective investment.