There is a new Clinton paid to deliver speeches — Chelsea, the former first daughter — and she is commanding as much as $75,000 per appearance. Aides stressed that while Bill and Hillary Rodham Clinton often address trade groups and Wall Street bankers, Ms. Clinton, now 34, focuses on organizations whose goals are in line with the work of the family’s philanthropic organization, the Bill, Hillary & Chelsea Clinton Foundation. Organizers said her star power helped sell tickets and raise money. And unlike her parents’ talks, Ms. Clinton’s speeches “are on behalf of the Clinton Foundation, and 100 percent of...