Tesla has joined the ranks of U.S. companies concerned that Trump's aggressive tariff policies may negatively affect global sales.

The electric carmaker’s warning about tariffs comes despite its boss's key position in the Trump administration.

Sen. Mark Kelly has fired back at Musk after the senior advisor to President Donald Trump called the lawmaker a “traitor” for visiting Ukraine. Kelly visited Ukraine last weekend, marking his third visit to the country in less than three years. The senator said in a statement that he visited to “show support for the Ukrainian people.”

The Arizona senator said his Tesla is a “rolling billboard for a man dismantling our government and hurting people.”