Donald Trump is the most powerful person in the world, and he has a loud megaphone. One word or tweet from him can move markets, or galvanize rage against a person or institution. Yet Amazon.com Inc. stayed quiet when the US president said the company crushes small businesses, may be violating anti-monopoly laws, dodges taxes and takes advantage of the ...

The next round of US tariffs on Chinese imports — $200 billion worth — could come as soon as this week, after talks to avert them ended without resolution. China is set to retaliate promptly with duties on nearly everything it imports from the United States. Even as he signaled an initial deal with Mexico, President Donald Trump declared it ...

From debt vultures and cooked books to fiscal time bombs, Argentine President Mauricio Macri inherited quite the mess. In his three years of office, he’s handled most of these challenges remarkably well, drawing cheers from investors and his compatriots. Here was a decisive, business-friendly manager, talking transparency and free-market initiatives to end what might have been “the largest populist experiment” ...