Unless I'm mistaken, children aren't a protected class in the U.S. in the same way that Asians, gays and Muslims are, so legally there's nothing stopping this.

Unless I'm mistaken, children aren't a protected class in the U.S. in the same way that Asians, gays and Muslims are, so legally there's nothing stopping this. Children that young (under the age of 6 is what the article specifies) frequently can't behave appropriately in public, and this deprives other paying customers of the experience they're paying for. If a gay Asian Muslim started grabbing men or practicing martial arts in the middle of the restaurant, he'd be asked to leave as well for the same reason.