2020 Democratic presidential candidate Julian Castro discusses the symbolic meaning of the border wall with CNN's Jake Tapper: CNN, JAKE TAPPER: Earlier this month, Speaker of the House Pelosi said that the wall was -- quote -- "immoral." As you know, as you just stated, there are roughly 650 miles of existing wall, barrier, fencing at the border. Are they immoral? JULIAN CASTRO: Well, I don't think it represents the best of what America stands for. I think -- I believe that if we were to build the kind of wall that Donald Trump is talking about -- (snip) But...