... it is neither wise nor realistic to round up millions of people, many with deep roots in the United States, and send them across the border.
O.K. So on the one hand, President Bush touts the fact that under his administration, it was possible to round up and deport 6 million illegal aliens. Then he says that it's not realistic to do what he just bragged had been done.
If you can round up and deport six million in five years, you can process eleven million in ten years with the same level of effort.
Build a wall first, and stiffen penalties for repeat offenders. These measures will reduce the incentive to cross the border.
Then get to work with the deportations. I'll understand if it takes a decade.