Washington Post - Koch-Backed Political Network, Built to Shield Donors, Raised $400 Million in 2012 Elections

Washington Post - Koch-Backed Political Network, Built to Shield Donors, Raised $400 Million in 2012 Elections- Investigation into the coalition of conservative groups, backed by the Kochs and other donors, which raised more than $400 million in 2012 while cloaking its donors, according to an analysis of new tax returns and other documents.