Bret Taylor, the chairman of OpenAI’s board, said the artificial intelligence company was “not for sale.” Mr. Musk is separately raising money for his A.I. start-up, xAI. By Cade MetzMike ...

By Elena ShaoKaren Yourish and June Kim Trump Says He’ll Rework Global Trading Relations With ‘Reciprocal’ Tariffs The president said his advisers would devise new tariff levels reflecting ...