Kochs' Grassroots Leadership Academy Training Astroturf Army

By Mary Bottari and David Armiak

With no clear favorite in the 2016 U.S. presidential primary race--following Gov. Scott Walker's early exit and Trump's march toward the nomination--the Koch brothers have turned their attention (and opened their wallets) to races for the U.S. Senate, U.S. House, and state governorships.

But with the Kochs having already spent at least $400 million of $889 million committed to the 2016 election cycle, according to news reports, where is that money being spent?

An under-covered arm of the Koch political operations is a likely recipient of some of that cash and it's called Americans for Prosperity's "Grassroots Leadership Academy."