The podcast Trump Inc. is a collaboration between WNYC Studios and ProPublica. A team of investigative reporters is examining whether and how the Trump family is profiting from the presidency, and they've organized the show around an "open investigation" so listeners and tipsters can contribute and follow along. We featured the first episode on our podcast feed a few weeks ago, and this week we're checking back with Episode 4. Ilya Marritz of WNYC and Eric Umansky of ProPublica speak with David Farenthold of The Washington Post about what he's been able to learn about President Trump's business dealings, and take calls from listeners with questions about possible profits and motives.