<p>IHR, I’m not a student, but a couple articles in the campus newspaper deal with the question you pose:
[21</a> ordinance prompts earlier drinking downtown - The Daily Iowan](<a href=“http://www.dailyiowan.com/2011/05/09/Metro/23419.html]21”>http://www.dailyiowan.com/2011/05/09/Metro/23419.html)
[One</a> year later with 21-only, police find calmer downtown - The Daily Iowan](<a href=“http://www.dailyiowan.com/2011/05/09/Metro/23418.html]One”>http://www.dailyiowan.com/2011/05/09/Metro/23418.html)</p>