Because I believe that Perry understands that the problems we have with illegal immigration reside at the national levels of the US and Mexican governments
As the only white person and only American ever in the poor hills of Icacos, Mexico I witnessed a 70 year old man refuse to go with his two sons and I watched them leave and I saw the old man cry begging them not to go that "this is our home". But they left anyways. It's been 18 years since that day.
The Mexican government loves that we accept the unhappy ones. They are the would-be opponents of Mexico's status quo.
Sorry, I think I understand it more.