Democratic Presidential Candidate Bernie Sanders was "very disappointed" in GOP candidate Ben Carson's statements that a Muslim shouldn't become president.

"It took us too long to overcome the prejudice against electing a Catholic or an African-American president," Sanders said on Twitter earlier on Sunday.

Speaking on "Meet the Press," Carson, who is third in the Washington Examiner's presidential power rankings, said Sunday that he would "not advocate that we put a Muslim in charge of this nation."

The former head of pediatric neurosurgery at Johns Hopkins took more heat from Sanders.

"People should be elected to office based on their ideas, not their religion or the color of their skin," the Vermont independent Senator said on Twitter.

Democratic National Committee Chair Debbie Wasserman Schultz also blasted Republicans Sunday for not supporting "a Muslim" or any American's right to run for president, and called on four Republican presidential candidates specifically to apologize.

The Council for American-Islamic Relations, the nation's largest Muslim advocacy group, told the Washington Examiner that Carson should withdraw from the race.

I am very disappointed that Dr. Carson would suggest that a Muslim should not become president of the United States. — Bernie Sanders (@BernieSanders) September 20, 2015

It took us too long to overcome the prejudice against electing a Catholic or an African-American president. — Bernie Sanders (@BernieSanders) September 20, 2015