Donald Trump visits border: Republican candidate takes aim at immigration policies

Republican Presidential Candidate Donald Trump has visited the US-Mexico border, accusing Harris of failing to protect national security. Speaking next to a pile of metal for the border wall, Trump blamed Democrats for failing to finish it. Al Jazeera's Rob Reynolds reports from Arizona. Subscribe to our channel: http://bit.ly/AJSubscribe Follow us on Twitter: https://twitter.com/AJEnglish Find us on Facebook: https://www.facebook.com/aljazeera Check our website: http://www.aljazeera.com/ Check out our Instagram page: https://www.instagram.com/aljazeeraenglish/ Download AJE Mobile App: https://aje.io/AJEMobile #aljazeera live tv news English #al jazeera live #DONALDTRUMP #US #MEXICO