Joe Biden plans to intervene in Nippon Steel’s proposed purchase of US Steel‚ a move that could threaten the deal and anger Japan‚ one of Washington’s closest allies. Biden will issue a statement expressing serious concern about the Japanese group’s proposed $14.9bn acquisition of the Pennsylvania-headquartered steelmaker before Prime Minister Fumio Kishida arrives for a state visit in Washington on April 10‚ according to six people familiar with the decision. US officials and lawyers...