Jalen's a good kid and kudos to his Mother for sticking up for her son. The underage consumption law is a stupid one that was initiated by M.A.D.D. in order to curb DUI's among teenagers and young adults. While I think drinking age laws were well intentioned, I think it is entirely the wrong approach. We are the ONLY non-theocratic nation on the planet that has such restrictive laws regarding alcohol consumption, yet we have some of the most permissive laws in the world on allowing teenagers to drive a vehicle. In my view a better approach would be to restrict driving rather than drinking.
Move the drinking age down to 18, but make it so that there are much fewer teenagers on the road driving by themselves putting themselves and others unnecessarily at risk. You should be allowed to obtain a learner's permit at age sixteen so that your parents or caregivers can teach you how to drive. However, as a general rule you shouldn't be allowed to drive on your own until you reach 18 years of age absent some compelling circumstances that may justify the granting of a hardship license that allows you to drive to and from work or to and from a school where no transportation is offered by the school. (i.e. a 17 year old who is commuting to a local community college). Even at age eighteen, obtaining a license should be a more rigorous endeavor that is more akin to obtaining a pilot's license than the current process. (i.e. you should have to keep a log documenting that you have driven a certain number of hours with a licensed driver serving as your instructor, the driving portion of the exam should be lengthier and more involved ect. ect.) Additionally, when you obtain your license, you should have a probationary period (perhaps a year or two) where your license can be more easily suspended for violations of the rules of the road with a zero tolerance for consuming any alcohol and driving a vehicle during such a probationary period.
Finally with regard to alcohol consumption, rather than a prohibition that comes along with the unrealistic expectation that all teenagers and young adults are going to complete abstain from any drinking whatsoever, there should be more eduction concerning alcohol including the dangers that come along with alcohol consumption, especially binge drinking, which in my view is the real problem. Additionally, bar tenders and party hosts who over serve patrons or guests to the point of alcohol poisoning should be subject to criminal prosecution. To me, such laws would make more sense then putting out a blanket prohibition on the underage consumption of alcohol, which is never going to be adhered to.