Swiss President Karin Keller-Sutter left Washington empty-handed on Wednesday after a hastily arranged trip to avert a crippling 39% tariff on the country's exports to the United States, its biggest market,

After weeks of working with U.S. officials to try to avoid hefty tariffs on Swiss goods, negotiators from Switzerland got assurances that a deal was all but done. Swiss businesses vowed to pour tens of billions in investment in the United States in the coming years.

Switzerland's President Karin Keller-Sutter and other top officials traveled to Washington on Tuesday to try to convince President Donald Trump that the 39% tariff on Swiss products -- among the highest from the Trump administration -- was too much and could cut profits for famed Swiss industries like chocolates and watchmaking.