I don’t know Perry’s answer to your question, but the real answer, no matter what he says, is that if the crime and violence come with the cartels the way they mix it up in Mexico, we will have a street shooting running gun battle in the USA for years to get them out of here.
Check out this website. This is the way the cartels do business in Mexico. Now they are setting up business here in Texas and elsewhere in the USA. Warning: very graphic, do not click if violent death photos offend you. http://www.borderlandbeat.com/
It’s a huge problem, Mexico is now officially a narco state and as they move into the border states and beyond the culture follows them. Eventually the only choice left will be to send the US Army down there to restore order.
But I don’t think Perry will deport very many though the question needs to be asked of all of them in fairness.