According to the letter, the tariff increase could lead to higher manufacturing costs for Tesla’s vehicles and reduce its competitive capacity.

Tesla stock slid again Monday even as the broader market continued to pull itself out of correction territory, as shares of the electric vehicle maker led by the world’s richest man, Elon Musk, faced further pressure from Wall Street as Musk grows embedded in the White House.

The US president signed an executive order on Friday to stop funding the American global broadcaster, following criticism from Elon Musk.

European Union foreign policy chief Kaja Kallas said on Monday that it was sad to hear that the U.S. was withdrawing funding for Radio Free Europe but that the EU cannot automatically come in with funding.

EU powers said on Monday they would try to save Radio Free Europe/Radio Liberty - the U.S.-funded news outlet set up to reach people under communism during the Cold War - but warned they might struggle to replace funding cut by Donald Trump.