American Express now made it easy to choose which card you want as your default card to appear upon login. They added the option to ‘star’ one card and that one becomes default. Log out and log back in, and you’ll see the starred come your default option.
Would be nice if we could drag and drop to reorder the cards as we’d like them, but I guess most people don’t have more than 2-3 cards so it’s not an issue for most people.
Hat tip to mosse8106 on r/churning

