The United States now has the highest corporate income tax rate in the developed world. If it were not for the few remaining tax preferences for businesses, far more American jobs would have long ago either been eliminated or never created in the first place.
The Koch Brothers have nothing to do with it, whatsoever. But that's not the point.
They might as well change their last name to Goldstein, so that the Left's "Two Minutes Hate" may proceed on time, daily.