It's not clear whether spending a lot of time on Facebook, Snapchat or Instagram leads to social isolation, or whether the lonely seek solace in social media.
President Trump on Monday signed a new executive order: a revised version of last month's travel ban. A big change is that the list of seven Muslim-majority countries has gone down to six.
Trump, without offering evidence, tweeted Saturday that President Obama "wire tapped" Trump Tower before the election. Steve Inskeep talks to Sen. Angus King, a member of the intelligence committee.
A deadline has been set for firms interested in helping to build a wall along the southern border. Prototype ideas are due this week; the government plans to make some design decisions by mid-April.
Steve Inskeep talks to John Cohen, who served as a senior counterterrorism official for Presidents Bush and Obama. Cohen says the most significant threat comes from people who are already in the U.S.
With the Trump family "so involved in international business, the logistical issues, costs and security risks are more substantial than we're used to seeing," says an expert in presidential travel.
A one-sentence order sends the case back to a lower court and cites the Trump administration's rescinding of guidance that students have the right to use facilities matching their gender identity.