10 US states have parental consent exceptions for service in a bar or restaurant:<p><a href="http:&#x2F;&#x2F;drinkingage.procon.org&#x2F;view.resource.php?resourceID=002591" rel="nofollow">http:&#x2F;&#x2F;drinkingage.procon.org&#x2F;view.resource.php?resourceID=0...</a><p>(It&#x27;s an interesting mix, including Massachusetts and Texas)<p>A good deal more let parents give their kids a drink at home.<p>I guess social attitudes contribute at least as much to college age binge drinking as legal regimes.