Suggest adding
http:// sorosfiles.com
CONGRESS CRITTERS WITH NONPROFITS – SOURCE FOR BASIC INFO
Names of their charities, private foundations, etc. Also personal financial disclosure statements (if they've made them), and other useful info.
Nonprofit Politics (tracking the connections between government and nonprofits)
congressnpo.stanford.edu
NOTE: not necessarily comprehensive, e.g., doesn't list McCain's "Institute."