US President Donald Trump looked set to open a new front in his trade wars on Monday with a plan to end preferential trade treatment for India that allows duty-free entry for $5.6 billion worth of the country’s exports to the United States. Trump, who has vowed to cut US trade deficits, has repeatedly called out India for its high tariffs, and US trade officials said scrapping the concessions would take at least 60 days after notifications to Congress and the Indian government.