Donald Trump, the mercurial businessman who is running for president, has been given to saying alarming, crazy things. He has gone birther on President Barack Obama, suggesting that he was really born in Kenya. He has claimed that one of his chief political rivals, Sen. Ted Cruz, R-Texas is ineligible to be president for having been born in Canada, albeit by an American mother. He has accused former President George W. Bush, brother of Jeb Bush, of lying about WMDs in Iraq and of knowing about the 9/11 attacks in advance. Trump is now turning his full, crazed birther attack...