We’ve all been hearing a lot about “the border”—in news headlines, candidates’ speeches, and political debates. On our third season of “Views on First: Speech & the Border” we examine the frontiers of censorship and surveillance. Today, the U.S. government uses its authority over the border to justify the exclusion of certain people and ideas, the surveillance of social media, the warrantless search of travelers’ laptops and cellphones, and the imposition of limits on access to foreign co...