The owner of the Japan nightclub in Mexico City has imposed a nearly $300 cover charge on Americans to protest President Trump’s policies and threats. The surcharge triggered criticism but also won applause from those who see it as legitimate protest against gentrification and American cultural influence in the Mexican capital. ‘Gringo go home.’ The uproar reflects escalating tensions in Mexico City, the site of anti-tourism protests and a growing resentment about American ‘digital nomads’ reshaping the city. MEXICO CITY — Federico Crespo was tired of President Trump’s bullying. Of his punishing tariffs, his threat to bomb cartels in Mexico...