Donald Trump's presidential campaign cut ties with an adviser, Sam Nunberg, on Sunday. The decision came two days after Business Insider revealed Nunberg had a long history of making provocative and racial Facebook posts. Trump campaign manager Corey Lewandowski dismissed Nunberg as a "low-level" staffer in a phone call discussing his firing. "Effective immediately, part-time, low-level staffer is no longer with the Trump campaign," Lewandowski said. Read more: http://www.businessinsider.com/trum...y-charged-facebook-posts-2015-8#ixzz3hgLzZCtb