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 …

  Dubai / Reuters Saudi Arabia’s stock market fell sharply for a second straight day on Wednesday, leading the entire region down, in response to weak oil prices and government austerity measures. The Saudi equities index, which had retreated 3.8 percent on Tuesday, sank a further 3.4 percent to 5,534 points, its lowest finish since Jan. 21. It has tumbled …

  London / AFP European stocks rebounded on Wednesday, brushing aside a broad retreat across Asia, as oil prices pushed higher and Deutsche Bank shares rose, recouping some of their previous days’ losses. London’s benchmark FTSE 100 index increased by 0.6 percent. In the eurozone, Frankfurt’s DAX 30 was up 0.7 percent at the close the Paris CAC 40 gained …

  Bloomberg Delta Air Lines Inc. is studying a purchase of roomier regional jets with a list value of as much as $2.3 billion — provided the company can get the pilots’ union to accept an overhaul of the small-plane fleet. The Atlanta-based carrier told the Air Line Pilots Association it wants the option of adding as many as 50 …

  Bloomberg Wal-Mart Stores Inc. is in advanced discussions to invest as much as $1 billion into India’s Flipkart Online Services Pvt. Ltd, as the two companies battle Amazon.com Inc. in e-commerce, according to a person familiar with the matter. Wal-Mart, the world’s largest retailer, would take a minority stake in Flipkart, the person said, asking not to be identified …

  AFP Australian carrier Qantas has warned of the danger of mobile phones being crushed in reclinable plane seats and catching fire after one ignited during a US flight, according to a safety report on Wednesday. The findings came just weeks after Qantas and domestic competitor Virgin Australia, as well as other international airlines, told customers not to use or …

Bloomberg American Airlines is poised to clear one of the final major hurdles in the integration of US Airways on Oct. 1 when it meshes the flight operating systems of both carriers in a move that travelers shouldn’t notice. The change will unify 15,000 American, US Airways and America West pilots into one workforce and remove barriers that tied them …

  Bloomberg Corporate pilots routinely take off without performing required safety checks, a study of thousands of flights by a trade group has found. Prompted by the 2014 crash of a corporate jet that killed billionaire Lewis Katz, which occurred after pilots neglected to ensure their flight controls worked, the National Business Aviation Association discovered that similar lapses are common. …