Iowa

desperate there and coming here . ....for some ,...it's not for some American dream as much as it's for survival
So many in the US don't seem to get what was done to the Mexican corn industry with NAFTA or the influx of immigrants and corporations call the shots on imports there just like here with manufacturing so the cheap Iowa corn benefitted the bottom line just like China here has become the best choice for money makers

http://money.cnn.com/2017/02/09/news/economy/nafta-farming-mexico-us-corn-jobs/index.html
"Before NAFTA, everybody here grew corn. People didn't make much money, but nobody went hungry," says Mendoza, 23, sharing common lore from her region. She was born just after NAFTA was signed.
As cheap American corn came pouring in from the border, it had a devastating effect on her family. Her father, Benancio Mendoza, couldn't compete and make a living wage selling corn. He had to give up and move to the United States looking for a job. He took up a job as a cook in Tennessee, saving up money to send home so his kids could attend school.