Elon Musk’s bitter falling-out with President Trump could be costly for Tesla. As long as he is persona non grata in the Trump administration, Mr. Musk, the chief executive of Tesla, will struggle to persuade Republicans not to gut climate policies worth billions of dollars to the electric car and battery company.

Donald Trump is not backing off his battle with Elon Musk. The president said Saturday that he has no desire to repair the relationship and warning that Musk could face ‘serious consequences’ if he tries to help Democrats in upcoming elections.