It follows Trump's unveiling of a 10% baseline tariff on all imports to the U.S. along with higher duties on dozens of other countries. The White House and Musk did not immediately respond to Reuters requests for comment. Musk, a Trump adviser who has been working to eliminate wasteful U.S. public spending, called for zero tariffs between the U.S. and Europe during a virtual interaction at a congress in Florence of Italy's right-wing, co-ruling League Party over the weekend.