can biden overcome that. and bernie sanders, someone who watches this closely -- he doesn't get a lot of boxes. he's a white guy. >> if you're a moderate, meh they're not excited about you. >> nbc news had a fascinating report last night. we talked about immigration. we largely talked about what's happening at the southern border. take a look at what nbc found at our northern border. >> it's here in vermont where we join u.s. customs and border protection to best understand why an increasing number of migrants come to canada to enter the u.s. illegally. all mexican nationals need is a $300 airline ticket and a $7 entry fee. >> does canada make it easy for you because it's so simple for somebody in mexico to fly to canada without the need of a visa. >> it's an area that can be exploited. >> why the numbers are small