ZURICH (Reuters) -Swiss exports to the United States rebounded sharply in September, with pharmaceutical companies ramping up their shipments ahead of the introduction of U.S. tariffs, government data showed on Tuesday. Total nominal Swiss exports to the United States leapt by nearly 43% last month in seasonally adjusted terms compared to the previous month, the figures showed. Overall, Swiss exports were up 3.4% in September. U.S. President Donald Trump imposed 39% tariffs on Switzerland in August, tri ...