Put the military on the border until the fence is finished. They could always hire illegals to build the fence for $8-$10 per hr & send them back when completed. With 1,000,000+ crossing yearly it shouldn't take too long.
"They could always hire illegals to build the fence for $8-$10 per hr & send them back when completed."
Their workmanship is so crappy that they would probably come back right through the fence.
Arrest, jail, and fine to the maximum anyone that employs illegals including homeowners that pick them up on the corner!