Donald Trump, within striking distance of the presidency, stepped on stage here Monday and did what Hillary Clinton hoped he would. He behaved like Donald Trump. The Clinton campaign’s greatest fear throughout the general election has been that some other Trump would emerge ― a more measured, reasonable and mature man, one who might look like he was ready for the Oval Office. That man doesn’t exist, so he didn’t show up. He fairly quickly reverted to the alpha male role that had worked so well in Republican debates, becoming something of a Rick Lazio in split screen, hectoring, interrupting, sniffling loudly and rolling his eyes.