Nippon Steel Corp. said Tuesday it "remains the only partner" for United States Steel Corp., vowing to continue pursuing its purchase despite White House opposition and the emergence of a rival offer from U.S. steelmaker Cleveland-Cliffs Inc.Cleveland-Cliffs CEO Lourenco Goncalves on Monday expressed the company's interest in acquiring U.S. Steel at a press conference in Pennsylvania. He also attacked Japan as "evil," claiming that it taught China how to dump, build overcapacity and overproduce.In response, Nippon Steel, whose $14.1 billion deal to take over U.S. Steel has been blocked by t…READ FULL ARTICLE