The U.S. dollar saw a second consecutive weekly gain following weaker-than-expected U.S. jobs data for December, which showed 50,000 jobs added, below economists' forecasts. This slowdown suggests the Federal Reserve may hold interest rates steady. The yen weakened amid speculation of a snap election in Japan, while the euro declined against the dollar due to mixed European economic indicators. Financial markets also awaited a potential Supreme Court ruling on tariffs.