Until now, the defining feature of the Trump administration’s trade policy has been a worrisome yet vague recklessness. The US Commerce Department’s new ruling on Boeing’s dispute with Bombardier, a Canadian aircraft maker, shows the harm that comes when the administration gets specific. The rules that regulate trade can’t work without restraint and a commitment to a liberal economic order. …

Political pressure is gradually forcing Facebook executives to take responsibility for the content that appears on the social network, at this point mainly for the advertising. So far, they are doing a good job of avoiding the real subject. On Wednesday, Chief Operating Officer Sheryl Sandberg addressed the recent discovery that ads on Facebook could be targeted at “Jew haters”—or, …

The Federal Reserve and other central banks have been on a quest since 2012 to get inflation back up to levels they deem appropriate for a stable, growing economy. There have been many setbacks along the way, leaving central bankers stumped, with Fed Chair Janet Yellen saying the slowdown in inflation has been a “mystery.” But their crusade may now …