NEW YORK--(BUSINESS WIRE)--American Express (NYSE:AXP) announced today that Card Members enrolled in the Membership Rewards® program will soon be able to use Membership Rewards points for dine-in purchases at participating Chili’s® Grill & Bar restaurants nationwide. The rollout will begin with company-owned restaurants on May 18, with the remaining participating restaurants joining through the rest of the year. “Card Members love the convenience of using Membership Rewards points right at