Perhaps some government-sponsored building projects might kick that off? How about a 30ft security fence with towers every 100 yards across their northern border...The best way of all would be to turn Mexico from a second-world country into a first-world country. If its citizens had plenty of opportunities at home they wouldn't be seeking them elsewhere. Of course, achieving that transition is no easy task.
More seriously, I had actually read somewhere that comment had been so attributed. I can only put it down to a brain-fart in a sound-bite situation.It's no LOL here when someone in Congress stands up and starts saying Canada has open doors to terrorists via its immigration system, or says the border must be tightened due to the 9/11 hijackers having entered the U.S. from Canada. (That pernicious myth was even repeated by the head of Homeland Security last year.)
There were a myriad of entry-points into the USA, so the perps could have arrived from any other country, just about. Would he be saying the same thing if they arrived from Bermuda? Or Iceland? Or on the direct flight over the pole from Japan? Resurrect the DEW line?