A fair number of high school government classes have students do various politically oriented letter writing as "experience" in "being part of democracy" (in quotes because I thought it was lame when I was in high school). Commenting on proposed regulations seems like a reasonable thing to do -- just because the student can't (legally) drink doesn't mean that they could comment on the fairness/benefit of a specific regulation dealing with alcohol (how many kids have made comments about smoking issues in various areas? I opposed a local smoking bad when I was younger than eighteen.)

Rachael