Washington --

Sen. Dianne Feinstein of California on Sunday joined a growing list of Democrats calling on San Diego Mayor Bob Filner to resign after allegations that he sexually harassed women, intensifying the pressure on him to step down.

"I don't think that somebody who is lacking a moral compass really sets a role model or really will provide the kind of leadership that San Diegans want," Feinstein, a former mayor of San Francisco, said on CNN's "State of the Union."

"I suspect there will be recalls, and the people will judge," she said. "I think he should make it easier and resign."

Filner, a Democrat, has rejected calls to resign. He said Friday that he would enter therapy for two weeks to learn how to behave better.

Rep. Debbie Wasserman Schultz of Florida, head of the Democratic National Committee, last week called on the 70-year-old Filner to step down, as have a number of San Diego-area Democratic officials, including Reps. Scott Peters and Susan Davis.

Filner, a member of Congress for 20 years before being elected mayor in November, has said that although his behavior toward women has been bad, he does not believe he has committed sexual harassment.