WOW! I'd seen the second video, but this is the first time I've seen the second one. That is unexcusable ignorance. Furthermore, these politicians are blatently lying to the public. This country needs to wake up.
Also, to those of you who think the .416 outperforms the .50 BMG, you should look further than bullet drop. If you look at wind deflection the .50 does better than any other round. This is beside the point though. There is no reason a .50 should be illegal, and even if there was a better performing round out there for us, that is no reason to be complacent about the .50 being illegal.