I'm not going to stop until you
stop making things up.
They don't eat horses legally in Mexico? Really? http://ats-sea.agr.gc.ca/latin/3659_e.htm http://www.mysanantonio.com/news/mex...r.3496288.html
Do I need to post more to back me up, or is that enough? Because there's plenty more available.
Mexico has animal cruelty laws, but they're very lax and they aren't enforced. Mexico has a corrupt government, and animals don't matter. Horse tripping, for example, is a perfectly legal rodeo event in Mexico. Read the second link above in its entirety for information on how well those cruelty laws are enforced.
The "excess" corn is being used to feed people and animals (haven't you ever seen corn in horse feed) as well as to produce ethanol to limit our dependence on fossil fuels as well as decrease pollution, hence, global warming. Don't like ethanol? Doesn't matter--it's coming anyway. http://ncga.com/WorldOfCorn/2006/environmental.asp