For those who’ve asked for more information about federal funding of environmental groups, I would recommend this report by the Senate Environment and Public Works Committee and this searchable database of current EPA grants. Note that both may well understate the amount of money involved. The EPA database, for instance, only covers grant money from the EPA; it excludes EPA contracts and government funding from other agencies. The Senate report also only focuses on a handful of prominent groups. I’ve also posted additional commentary on the subject here.