http://mediamatters.org/blog/2015/01/12/did-ben-carson-violate-fox-news-policy-on-produ/202092

Dr. Ben Carson reportedly endorsed and give speeches on behalf of medical supplement maker Mannatech, Inc. while he was employed at Fox News, an apparent violation of the network's stated policy prohibiting "any on-air talent from endorsing products or serving as a product spokesperson."
Fox News hired Carson in October of 2013 and cut ties with him in November of 2014 as he reportedly began exploring a campaign for the Republican presidential nomination.
National Review reports that in March of 2014, while still working at Fox, Carson appeared in a video for Mannatech, promoting its line of "glyconutrient" products. In the video, Carson talks about his 10-year use of the company's products, noting, "The wonderful thing about a company like Mannatech is that they recognize that when God made us, He gave us the right fuel. And that fuel was the right kind of healthy food." Carson also made speeches at Mannatech events in 2011 and 2013.
According to the conservative magazine, "Mannatech has a long, checkered past, stretching back to its founding more than a decade before Carson began touting the company's supplements."
if he has been shilling for them for ten years he had to know of the controversy surroung the company he was trying to sell to the public and he's this cycles token house "N" like Herman Cain before him he will never be nominated or elected president. the fact that Fox let him go was not behind his moonlighting but when he decided to run for the White party president that firing was a message that he got nothing coming there and they won't speak his name again, go home and be what you are by yourself or he can pal around with fellow refugee Allen West both are equally reprehensible and not welcome anywhere.