U.S. President Donald Trump is not interested in talking with his former ally Elon Musk, amid a bitter feud over the president's sweeping tax-cut bill, a White House official said on Friday, adding that no phone call between the two men is planned for the day.

Elon Musk’s explosive rift with the White House stems from longstanding tensions about his libertarian policies and his unpredictable behaviour, according to sources close to the president.