I couldn't agree more with Robert Wren's call (Readers' Forum, June 14) for the state of Utah to do an in-depth analysis of the cost of illegal aliens to the taxpayers of this state. Until a few years ago, like many Utahns, I was unaware of the extent of the problems of illegal immigration. However, after having recently returned from living in Mexico for several years and from my extensive study of this issue, I would like to point out something which few people seem to be aware of: Mexico is a very wealthy country with abundant natural resources. Yes, there is much poverty, but it stems from the refusal of the ultra-wealthy class to pay taxes or to invest in economic development. They would rather see United States citizens tax themselves to pay for Mexico's most pressing problems.I protest my tax dollars being spent to pay for those things for which wealthy Mexicans could and should pay to help the citizens of their own country.