U.S. President Donald Trump will sign an executive order on Tuesday making official his vow to double tariffs on steel and aluminum, White House spokeswoman Karoline Leavitt told reporters in a briefing.

The alliance between President Donald Trump and Elon Musk spectacularly imploded Thursday as the world’s most prominent bromance collapsed into mutual public trolling. For months, as Musk emerged as the president’s constant companion and self-proclaimed “first buddy,