整理：每日全球外汇市场要闻速递（5月19日）

Group 1 - Moody's downgraded the U.S. sovereign credit rating from Aaa to Aa1, with the U.S. Treasury Secretary expressing skepticism towards Moody's, labeling it as a "lagging indicator" [1] - U.S. Treasury Secretary Basant stated that tariff discussions are focused on 18 key partnerships, warning that tariffs could revert to levels seen on April 2 if negotiations are not sincere [1] - Exports from the EU to the U.S. surged by 59% ahead of Trump's "liberation day," resulting in a record trade surplus [1] Group 2 - The Swiss National Bank's president reported constructive discussions with the U.S. regarding foreign exchange issues, asserting that Switzerland is not a currency manipulator [1] - ECB Governing Council member Villeroy hinted at the possibility of lowering interest rates below 2%, indicating no reason for a further 50 basis point cut in the foreseeable future [1] - ECB Chief Economist Lane announced that an updated strategy will be released in the second half of the year, incorporating U.S. tariff uncertainties into June's forecasts [1] Group 3 - The Deputy Governor of the Bank of Japan, Ueda Shinichi, indicated that if the economy and prices improve as predicted, further interest rate hikes will continue [1] - Canadian Finance Minister noted that most tariffs on the U.S. remain in place [1]