Sounds like you are hoping for one. If anything people should be concerned of the northern border where there is a Canadian govt, 100 times more anti-American than the avg. Mexican, welcomes and appeases the islampfascists with open arms, gives them generous welfare benefits and they blend into the large muslim communites in cities close to the border such as Toronto, Montreal, and Vancouver.
I am certainly not hoping for one; only warning what would happen if one happened.
As far as the Canadian border goes, if Ottawa refuses to tighten security up there, then we should treat that border no different than the one with Mexico.
It should be noted however, that the 911 hijackers all entered this country legally and then disappeared. This underscores the fact that an effective immigration policy must deal with the "backfield" as well as the front line.