Attorney William Johnson, a leader of the American Freedom Party and self-proclaimed white nationalist, made it onto Trump's list of delegates. He now says he will not attend the convention.
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Donald Trump and his wife, Melania, arrive to speak to supporters at Trump Tower in New York following his victory in Indiana Tuesday. Improbably, Trump is now assured of being the GOP nominee.
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Donald Trump strategist Paul J. Manafort, left, chats with former presidential candidate Ben Carson, as they head to a reception at the Republican National Committee Spring Meeting, Thursday.
Presidential candidate George Wallace reaches out for the hands of his supporters at the Texas State Convention of his American Independent Party, Dallas, Sept. 17, 1968.
A supporter wearing a Bernie Sanders mask poses with a supporter before a campaign event at Temple University, April 6, 2016, in Philadelphia, Pennsylvania.
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Curly Haugland, a Bismarck businessman and North Dakota representative on the Republican National Committee, reads a newspaper on the North Dakota state Republican convention stage in 2010.