WASHINGTON, Feb 10(Reuters) - U.S. import prices were unchanged on a year-on-year basis in December after falling 0.1% in November, the Labor Department's Bureau of Labor Statistics said on Tuesday.

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Upcoming 50% tariffs on semi-finished and derivative copper products start August 1. Chile, Canada, and Mexico are top U.S. copper sources, potentially impacting tariffs' effects. Copper import ...