A law professor joins us to discuss some of the legal questions surrounding President Trump’s call over the weekend for the Justice Department investigate whether the FBI infiltrated his campaign. Also, the same 3D printing technology that might one day custom-print heart valves or lead to astronauts manufacturing their own tools aboard the International Space Station could also be used to print bombs and explosives, according to a new RAND Corporation paper. And we discuss concern among sports gambling addiction researchers following a recent Supreme Court ruling that opens the door to legalized sports betting. That and more, in hour one of Here & Now’s May 21, 2018 full broadcast.