Bernie Sanders on Sunday said even though his rival Hillary Clinton may have the experience to be president, she does not have the judgment.

In an interview with NBC's "Meet the Press", Sanders pointed to Clinton's vote in favor of the U.S. invasion of Iraq and her cozy relationship with Wall Street banks. "I have my doubts about what kind of president she would make," he said.

"She may have the experience to be president of the United States," the Vermont senator told host Chuck Todd. "No one can argue that. But in terms of her judgment, something is clearly lacking."

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Sanders, who recently clarified comments he made last week over Clinton's presidential "qualifications," reiterated his point on Sunday.

"When you vote for virtually every trade agreement that has cost the workers of this country millions of jobs; when you support and continue to support fracking, despite the crisis that we have in terms of clean water; and, essentially, when you have a super-PAC that is raising tens of millions of dollars from every special interest out there, including 15 million from Wall Street," Sanders said, "the American people do not believe that that is the kind of president that we need to make the changes in America to protect the working families of this country."

The interview comes ahead of the rival candidates' impending debate in New York ahead of that state's primary. On Saturday, Sanders won the Democratic caucus in Wyoming, continuing a winning streak that nonetheless added only a handful of delegates to his tally.

Sanders noted that his campaign has cut Clinton's lead in New York by a third in just one month.

"We have the momentum," he said.