a lot to do with why donald trump one of very key states that were key to his victory. , people inylvania that area know where their heroimn is coming from. heroin is a great traffickers drub -- traffickers drug because it is easy to conceal. you don't need a lot of space in , and to traffic heroin what most likely needs to happen is not a wall. we have a lot of walls on the border. yards intoarts 50 the ocean and goes for 14 miles until it hits a big mountain. we have a lot of walls all around the border. we have them everywhere, but heroin -- walls won't stop heroin. they will stop -- stop people, but they won't stop heroin. sincemand we have created the mid-1990's across the united states, what will stop the flow of heroin is a mexico that starts to change in fundamental ways. i wrote two books about the country, and it seems to me that what we really need to do with regards to mexico is not not value its friendship above all things. we need to be in conversation with mexico and the constantly relating to mexico as one of our most important foreign relations. we need to be pushing them