which drains the smartest, most energetic people from Third-World societies which desperately need their leadership
I'm sure you're talking about illegal immigration but one of the greatest triumphs of our LEGAL immigration policy is that it has always attracted the best and brightest to our country. To see this benefit to our nation stood on it's head as a reason to resist immigration (and again I'm sure you're referring to illegal immigration) doesn't impress me.
Are you trolling or what?
(Note: that isn't an insult... you are actively stating that you are purposefully ignoring the video because you actively ignore the possibility that it could potentially teach you something. That is the definition of "willful ignorance". My comment is not an attempt to label your entire intellectual profile as "ignorant".)