Former Democratic U.S. Senator and vice presidential candidate Joe Lieberman told Sean Hannity Monday that the Democratic Party's "loudest voices" cannot be seen as denigrating the United States and its economic system.

"Our economic system has worked for most of the American people. It's working for most of the American people today. Unemployment is at a very low level," said Lieberman, who was Al Gore's running mate in 2000 and served in the U.S. Senate until 2013.

Lieberman, who caucused with Democrats but was an independent in his final term, emphasized that some of the new voices in the party - including Rep. Alexandria Ocasio-Cortez (N.Y.) - are putting forth policies that are unrealistic.

"The government simply cannot afford everything they’re promising. ... Who’s going to pay for it? You can’t get enough money out of the top one percent to pay for this. It’s going to be the middle class," he said, adding that he doesn't recognize the party as the same one he joined when John F. Kennedy was president.

The Jewish Connecticut native also took issue with Rep. Ilhan Omar (D-Minn.) for her recent criticism of Israel, labeling her rhetoric as "blatantly anti-Semitic."

He said Omar's "lies" do not represent how Democrats feel about Israel, but she was not strongly condemned by her House colleagues.

"If you let lies live unresponded to, they will spread," he warned.

Watch the full interview above.

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