Hey, Bush - Control the Freaking Border!
Controlling the border is one of the basic functions of the Nation-State. A government that cannot, or will not, do so loses one of the pillars of sovereignty. Case in point, from the Brownsville Herald, TX:
"Last week’s arrest of a Bangladeshi immigrant trying to illegally enter the country has federal authorities concerned over the vulnerability of the U.S.-Mexico border to infiltration by terrorists."
He was brought over by a gang called Mara Salvatruchas. "The Central American gang has alleged links to al-Qaida. “This is alarming,” said U.S. Rep. Solomon P. Ortiz, D-Texas."
We have the man-power and the technology to control the border. We lack the political will. This will come back to bite us in the ass. By refusing the simply control the border now we are inviting a backlash later. After an attack is traced to terrorists crossing the border you can count on a angry and betrayed public crying to just close the damn thing all together. After a series of truck-bombs level a few hotels or office buildings in Houston or Dallas people will want the damn border covered in barbed-wire and land mines. And if the Feds won't do it, count of the locals to take matters into their own hands. (See Holland if you need confirmation of how this dynamic works.)
An ounce of fucking prevention prevents a pound of knee-jerk reaction cure.