We have hundreds, if not thousands of them working here. But I'll let you in on a little secret. The people who were to go looking for Osama Bin Laden in Afghanistan trained here. Our terrain is nearly identical, and very difficult to patrol.
That's the primary reason I'd like to see the fence go up. Several Orders of Magnitude more effective in stopping the traffic, and cheap as all get out when you think about it.
They could have done a little on-the-job training out at the dozens of protest marches the last couple weeks. It's not like they couldn't find them. They might also want to mark May 1st on their calendars.