was today you come and try to take my ar-15s, people weren't having any of this. >> there's a lot of talk about beto probably not going to win the nomination but challenging john cornyn from texas. if republicans had the slightest worry about beto running for senate in texas, they're not worried anymore, he's unelectable in the state of texas >> laura: the best schooling of the rhodes scholar goes to julian castro. mayor pete was a little shell shocked here. >> this reminds everybody about what they cannot stand about washington, scoring points against each other, poking at each other, and telling each other that your plan, my plan, we all -- >> it's the democratic primary election. it's called an election. it's called an election. this is what we're here for. it's an election. >> laura: mercedes, mayor pete looked like he should have been