Is there any funding opportunity for postdoc in US?

I have a friend from Singapore who are interested in doing postdoc in US but have found no desired profs wanting him, since his research does not match those professors that he would like to work with. Therefore, he is looking other general funding opportunity that allows he to be funded so that he can work with prof in US if possible.

He is very good in research, and has published quite a few topics in top conferences and a journal. But to perform new research that matches those profs need 1-2 years. Therefore, he is looking for funding like http://www.society-in-science.org that could grant him work with other professors (prof don't need to give money).

Hope that someone could shed him some light, either

1. 
   

   Possible methods that address his problem (not spending another 2 years for performing those related research - but you can assume he has really good capability in doing those research independently, it just that you cannot see it from his current publication history)

   
   


2. 
   

   funding opportunity that are available;