I completely agree with (unknown). I think this presentation was the most interesting of the day and I actually learned quite a bit from it. I had only ever heard the negative side of immigration, so it was nice to hear the opposing side of those arguments. I'd also never seen a visa, so that was cool!
Before, I never really had a set view on immigration, but because of that presentation, I'm not so against it anymore. Thanks for teaching us something interesting guys!