The Importance of Universal Background Checks

I'm the only Republican nominee that's talking about gun violence and how we deal with this. I believe universal background checks is a simple one. You can't solve the problem of all the undocumented unless you've solved about 12 other problems before you get to that. And it starts with the actual activity at our border right now. 5.5 million people have come into our country illegally. That's not humane. Would you keep the US pledge to cut greenhouse gas emissions by 50%.