The Republicans made the call at a news conference hosted by the Nassau County, New York, Republican party two days after a nonpartisan watchdog accused Santos of breaking campaign finance laws in a filing with the Federal Elections Committee.

Santos, who represents much of Nassau County just to the east of New York City, has admitted fabricating much of his resume.

Among other claims, Santos said he had degrees from New York University and Baruch College, despite neither institution having any record of him attending. He claimed to have worked at Goldman Sachs and Citigroup, which was also untrue.

He also falsely said that he was Jewish and that his grandparents escaped the Nazis during World War Two.

"For him to make up this story that his parents were Holocaust survivors is beyond the pale. It is simply tragic and outrageous and disgusting," Nassau County Executive Bruce Blakeman said. "He is a stain on the House of Representatives."