Trump also took a swipe at her for asking campaign contributions from him.
"I'm very strong on illegal immigration. She's weak on illegal immigration. I mean, she's very, very weak on it and it's a problem. She's big on amnesty but very weak on illegal immigration. And so therefore we have a disagreement," Trump told the MSNBC news.
He was responding to questions on remarks by Haley Tuesday night in the Republican response to President Barack Obama's State of the Union Address in which she was critical of the immigration policies of Trump.
Haley, however, later urged Trump not to take her criticism personally.
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Trump said, "I mean, she comes up to my office when she wants campaign contributions and I've given her tremendous contributions over the years. But I guess now that I'm running (for President), she doesn't like me quite as much. She liked me better when I was a giver of contributions than she does when I'm not," Trump said, adding that he is leading in Haley's state of South Carolina.
"I want people to come into the country, but I want them to come in legally, and that's a very big distinction. And she's just very weak on the subject. And that's something that doesn't play very well with me," the New York-based real estate tycoon said.