They always tell you it's all just for the stats, but of course we know it has to do with affirmative action-type stuff, recruiting more students from underrepresented groups, etc. And that, in turn, only applies to American citizens. So if you are not an American citizen, I believe you can't be considered a minority anyway under the US DOE guidelines.
But still, I would just choose whatever I feel like choosing. What can they do?