Here's a powerpoint that seems to detail strategies for getting around US lobbying laws:
http:// anonfile.com/p8ebk9e1b4/_1_u_s_sourcing_and_grantmaking_ed.pptx
Not a lawfag or accountant. Maybe a different anon can shed light. If you would like links to download the entire archive, you'll find them here:
This file is one of many, many more related to the subject, among many, many others: child "welfare" across several regions, migrant "advocacy", grant recipients, et. al.