While Hillary Clinton's team contends her lock on the nomination is "nearly insurmountable," the campaign frequently grumbles that Sanders hasn't faced the same level of scrutiny as the former secretary of state, New York senator and first lady. Her aides complain about Sanders' rhetoric, claiming he's broken his pledge to avoid character attacks by going after her paid speeches and ties to Wall Street. They also point to scenes of Sanders supporters booing Clinton's name at his rallies.