Story highlights Hillary Clinton won't be responding to Donald Trump this year

That's what she told a voter in Cedar Rapids, Iowa on Monday

(CNN) Hillary Clinton won't be responding to Donald Trump this year, or so she told a voter in Cedar Rapids, Iowa on Monday.

"I've adopted a New Year's resolution," Clinton said when a man asked her what she thought about Trump's claim that she and President Barack Obama created ISIS . "I'll let him live in his alternative reality. I'm not going to respond."

While Clinton's comment drew laughs from the audience, it is not totally true. Clinton regularly uses the Republican front-runner -- and his slogan "Make America Great Again" -- to knock Republicans. Clinton's campaign, too, has routinely tried to cast all Republicans as nothing more than Trump without the high poll numbers.

"You can't make America great again if you insult and demean the people of America," Clinton said in Concord, New Hampshire on Sunday.

Trump has made it a habit to knock the former secretary of state and her husband, Bill Clinton, who made his campaign trail debut on Monday in New Hampshire. Trump's knocks against the Clintons are a way for the Republican to show primary voters that he is ready -- and more than willing -- to take on the Democratic front-runner.

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