A fundraiser for the president set for this weekend is being hosted by the owner of Equinox, prompting some to cancel their memberships. Wealthy supporters of the president will pay up to $250,000 for some face time with him. The host, billionaire Stephen Ross, owns the chain of upscale health clubs that has cultivated a progressive image. He also is an investor in SoulCycle. Now, a boycott is being organized on social media. Some New Yorkers are rushing to cancel their memberships.