Donald Trump

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In this March 19, 2016, photo, Republican presidential candidate Donald Trump speaks during a campaign rally in Tucson, Ariz. (AP Photo/Ross D. Franklin)

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Donald Trump predicts he will enter the Republican National Convention in Cleveland this summer with as many as 1,450 delegates. Other prognosticators say he will be lucky to eke out the 1,237 majority needed for the party's presidential nomination. (Associated Press)

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In this March 14, 2016, photo, Republican presidential candidate Donald Trump speaks at a rally at Lenoir-Rhyne University in Hickory, N.C. (AP Photo/Chuck Burton) ** FILE **

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Donald Trump's Wildfire Illustration by Greg Groesch/The Washington Times

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Republican presidential candidate Donald Trump addresses the crowd during a rally Sunday, March 13, 2016, in Bloomington, Ill. (AP Photo/Charles Rex Arbogast)

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Former Republican presidential candidate Ben Carson, left, embraces Republican presidential candidate Donald Trump, after announcing he will endorse Trump during a news conference at the Mar-A-Lago Club, Friday, March 11, 2016, in Palm Beach, Fla. (AP Photo/Lynne Sladky)

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Former Republican presidential candidate Ben Carson, speaks after announcing he will endorse Republican presidential candidate Donald Trump, right, during a news conference at the Mar-A-Lago Club, Friday, March 11, 2016, in Palm Beach, Fla. (AP Photo/Lynne Sladky) ** FILE **

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Republican presidential candidates Marco Rubio, Donald Trump, Ted Cruz and John Kasich stand together before the start of the Republican presidential debate sponsored by CNN, Salem Media Group and the Washington Times on Thursday in Coral Gables, Fla. (Associated Press)

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Republican presidential candidates, Sen. Marco Rubio, R-Fla., from left, Donald Trump, Sen. Ted Cruz, R-Texas, and Ohio Gov. John Kasich, stand together during the signing of the National Anthem, before the start of the Republican presidential debate sponsored by CNN, Salem Media Group and the Washington Times at the University of Miami, Thursday, March 10, 2016, in Coral Gables, Fla. (AP Photo/Wilfredo Lee)

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Republican presidential candidates, Sen. Marco Rubio, R-Fla., left, Donald Trump, Sen. Ted Cruz, R-Texas, and Ohio Gov. John Kasich, right, stand together before the start of the Republican presidential debate sponsored by CNN, Salem Media Group and the Washington Times at the University of Miami, Thursday, March 10, 2016, in Coral Gables, Fla. (AP Photo/Wilfredo Lee)

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In this March 8, 2016, file photo, Republican presidential candidate Donald Trump speaks during a news conference at the Trump National Golf Club in Jupiter, Fla. (AP Photo/Lynne Sladky, File)

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Republican presidential candidate Donald Trump speaks during a campaign rally Monday, March 7, 2016, in Madison, Miss. (AP Photo/Brynn Anderson)

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In this March 5, 2016, file photo, Republican presidential candidate Donald Trump speaks to the crowd asking them to take a pledge to promise to vote for him during a campaign rally, in Orlando, Fla. (AP Photo/Brynn Anderson, File)

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In this March 7, 2016, photo, Republican presidential candidate Donald Trump speaks during a campaign rally in Concord, N.C. (AP Photo/Gerry Broome)

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Republican presidential candidate Donald Trump speaks during a campaign rally Monday, March 7, 2016, in Madison, Miss. (AP Photo/Brynn Anderson)

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Republican presidential candidate Donald Trump speaks during a campaign rally Monday, March 7, 2016, in Madison, Miss. (AP Photo/Brynn Anderson) ** FILE **