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Republican presidential candidate, former Utah Gov. Jon Huntsman, second from left, listens to lab employee Zach Anderson, left, as he tours Nelson Laboratories with his daughter Gracie Mei Huntsman, center, wife Mary Kaye Huntsman, second from right and son Will Huntsman, right, in Taylorsville, Utah, Tuesday June 28, 2011. Huntsman toured the lab and meet the staff during a campaign stop in Utah. (AP Photo/Jim Urquhart)

Former GOP candidate Jon Huntsman

Jon Huntsman withdrew from the Republican race for president on January 15 and endorsed his former rival, Mitt Romney.