Swiss President Karin Keller-Sutter will travel to Washington later on Tuesday for meetings with U.S. authorities on improving Switzerland's customs situation, the government said.

"The aim is to make the U.S. a more attractive offer in order to reduce the level of additional tariffs on Swiss exports, while taking U.S. concerns into account," the government said in a statement.

(Writing by Madeline Chambers, Editing by Miranda Murray)