According to Nancy Folbre, an economics professor at U Mass-Amherst 
writing for The New York Times "Economix" blog, her profession is being gamed by right-wing money men who are buying influence within universities to validate their political agenda:
If you don’t like what economics professors like me are saying, go  hire your own. Of course, if they’re on your payroll, no one will be  surprised if they agree with you, so it’s best to hire them indirectly,  through a tied donation to a university.
Frustrated that so few students are reading your favorite book about  the virtues of free enterprise? Offer highly respected universities  money to make it required reading. 
As Catherine Rampell pointed out in Economix last week, conservative foundations founded by Charles Koch and John Allison have actively pursued such strategies.