Donald Trump attacks me as he has no answers on substance: Hillary Clinton

Raleigh (US): Presumptive presidential Democratic nominee Hillary Clinton has alleged that her Republican rival Donald Trump launched a personal attack against her because he has no answers on the substance of the facts against him.

"Look, I know Donald Trump hates it when anyone points out how hollow his sales pitch really is," Clinton told her supporters at an election rally in this key city of North Carolina, hours after Trump called her a "world class liar".

"I guess my speech yesterday must have gotten under his skin because right away he lashed out on Twitter with outlandish lies and conspiracy theories, and he did the same in his speech today," she said.

"Now think about it. He's going after me personally because he has no answers on the substance. In fact, he doubled down on being the King of Debt. So all he can do is try to distract us. That's even why he's attacking my faith, sigh," she said as a day earlier, Trump had questioned her religion.

"Of course attacking a philanthropic foundation that saves and improves lives around the world," she said referring to Trump's allegations against the Clinton Foundation.

"It's no surprise he doesn't understand these things. The Clinton Foundation helps poor people around the world get access to life-saving AIDS medicine. Donald Trump uses poor people around the world to produce his line of suits and ties," she alleged.

"We can't let Donald Trump bankrupt America the way he bankrupted his casinos. We need to write a new chapter in the American Dream ? and it can't be Chapter 11," she said.

"Economists left, right, and center all agree Donald Trump will drive America back into recession. Just this week, one of Senator John McCain's former economic advisors said Trump's policies would wipe out, wipe out three-and-a-half million jobs. His tax cuts tilted toward the wealthy would add more than USD 30 trillion to our national debt over the next 20 years," she said.

"That is just astonishing and it's no wonder that the Economist Intelligence Unit, one of the leading firms that analyses the top threats to the global economy, now ranks a Trump Presidency at 3, right behind problems in China and volatility in the commodities markets," said the former Secretary of State.

Clinton alleged Trump has no real ideas for making college more affordable or addressing the student debt crisis.

"He has no credible plan for rebuilding our infrastructure, apart from his wall. He has no real strategy for creating jobs, just a string of empty promises," she said.

"Maybe we shouldn't expect better from someone whose most famous words are, 'You're fired'. Well, here's what I want you to know: I do have a jobs program. And as president, I'm going to make sure you hear, 'You're hired'," Clinton said.