Vogel.. „Koch brothers' Americans for Prosperity plans $125 million spending spree“. Politico (9-may 2014-yil). Qaraldi: 6-may 2015-yil. „The Koch brothers' main political arm intends to spend more than $125 million this year on an aggressive ground, air and data operation benefiting conservatives, according to a memo distributed to major donors and sources familiar with the group. The projected budget for Americans for Prosperity would be unprecedented for a private political group in a midterm, and would likely rival even the spending of the Republican and Democratic parties' congressional campaign arms.“.