I spent most of the last two days driving and walking along the border fence at Brownsville, Texas. It’s not the first barrier of this kind that I’ve seen. They’re going up everywhere — in more than 40 countries now: Donald Trump’s calls for a powerful border wall are part of a trend. Though their reasons for existence, styles ...

There has been a lot of heated debate in the news media and the election campaigns about international trade. In the first presidential debate, candidate Donald Trump relentlessly flogged the issue, declaring that trade had hollowed out American industry. On the left, antitrade sentiment continues to simmer, much of it focused on opposition to the Trans-Pacific Partnership. Meanwhile, the economics ...

  The latest food safety scandal in China might be its most damaging. Earlier this week, a former doctoral student at one of the country’s national testing centers for genetically modified organisms went public with allegations of scientific fraud, including claims that records were doctored extensively, that unqualified personnel were employed under illegal contracts and —most seriously — that authorities ...