A 'Smart Wall' Could Spark a New Kind of Border Crisis

Published: Feb. 22, 2019, 4:32 p.m.

b'After years of promises about a physical wall stretching along the United States-Mexico border, president Donald Trump declared a state of emergency last week in an attempt to secure wall funding in spite of Congressional opposition. But physical barriers alone have always been both ineffective and expensive.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'