Got it ... One other thing is that, the channeler facility for non U.S citizen is dependent on the channeler, whether they can process it or not. Its upto them and their policies to decide. FBI website doesn't say that it won't accept requests from channelers for non U.S citizens though, if we read the clause from FBI site carefully.
- An FBI-approved Channeler may only process requests for a U.S. person (an individual who is a citizen of the U.S. or a lawful permanent resident of the U.S.). A lawful permanent resident is any person not a citizen of the U.S. who is residing in the U.S. under legally recognized and lawfully recorded permanent residence as an immigrant (also known “Permanent Resident Alien,” “Resident Alien Permit Holder,” and “Green Card Holder”).
I know people from other forums who even got their PR by getting an FBI PCC from a channeler who are non U.S citizens without GC.