The U.S. dollar strengthened against the Swiss franc and euro but weakened versus the yen on Wednesday as positive sentiment from a new U.S. trade deal was offset by political uncertainty surrounding Japanese Prime Minister Shigeru Ishiba's future.

Trump said the U.S. will impose a 15% tariff on Japanese imports under the agreement, which he hailed as "maybe the largest deal in history."

President Trump will get to decide where to invest Japanese money and the United States will keep 90 percent of the profits, the White House said.