Has Donald Trump made his first serious boo-boo of the campaign? For weeks, the media have trumpeted the supposed death of the Trump campaign. First, they claimed, Trump’s campaign imploded on launch thanks to his comments about illegal immigration. Then they claimed that Trump was finished because of his slap at Senator Sen. John McCain (R-AZ)43% ’s (R-AZ) war service. But neither of those comments alienated Trump’s base – he’s maintained his seven point lead over Wisconsin Governor Scott Walker in the 2016 presidential polls, with no other candidate breaking double-digits in the polls. In fact, his original comments about...