No need to dig up - you're just parroting Fox news scare tactics talking points. You're referring to an infinitesimally small number of people (maybe in the 100s or possibly 1000s and of those border crossings, maybe in the 10s of people that deserve extra scrutiny). There are far more terror watch list people coming in through Canada than they are through Mexico.
Even so, this has been going on for several years. Where are the subsequent waves of mass shootings/killings/etc of these folks?
And btw, I'm an advocate of maintaining tight immigration standards and am supportive of significant immigration reform.
I must have ****ed you off. If you're lazy, you're just lazy - not my fault. If you're also uninformed - that's your fault as well. I want nothing to do with lazy or stupid. Those are personal characteristics that I hold in contempt during my waking hours.
I haven't seen a minute of Feaux News in two years - so your pizz-poor assumption is way out in the woods. That's all you got? Ooooooh. That really hurts . . . nah - I suppose in your world - that's supposed to be an insult. It appears I'm years ahead of you, and I haven't seen Fox News in at least two years.
You're grasp of how things work in the dirty jobs business is miniscule - your numbers are way off, and a clandestine operation of any significance doesn't happen quickly. That's not how things work.
Those you want to take up positions in another country for an operation do so low level. They go to their primary operations area, and they take their time learning everything they can about each target, best ingress and egress from said targets - as well as quick, concealed paths to the next target - and the next.
Your dreamland waves of attacks, mass shootings/killings you assume should have already manifest?
You obviously don't know how these things work - I'll try to give some reality - perspective here. You don't want a series of attacks - a few here - a few there. Each time, security measures will be taken in locations you didn't hit - and that somewhat neutralizes future events.
You want a coordinated, simultaneous overloading of counter-resources. First things - cut communications and power, hit water supplies for the larger cities - and even drop some bridges. You overload all opposition assets.
In days, that city is on the brink. No water - folks have to depopulate. Other cities won't be sending water as they have the same problems. Chaos. Police are uniquely unsuited for countering these specialists - who have pre-positioned their charges, explosives, weapons systems, etc., so they can travel light and still make maximum impact.
Killing masses of people under those conditions is like shooting fish in a barrel - and the terror that spreads as word gets out of massacres - makes things even worse. Dress as cops? That really piles it on!
All this takes time and preparation. Months. And they're funded, so they can refine their caches, movements, ingress and egress assists - everything.
A hundred men inside the walls - can do more damage than a thousand men outside the wall - in one tenth the time.
Recall the sniper team that paralyzed the northeastern seaboard a couple decades ago? That was two males - and one was just a kid. And one 5.56 rifle.
Your initial numbers you assume - are wrong. Start there.