SpaceX Sues Labor Board Over Employee Firings 

SpaceX sued the U.S. government’s labor board a day after an official at the agency accused the company of violating a federal workplace law by firing employees who circulated a letter critical of Elon Musk.

The rocket company led by Musk alleged in a complaint filed in federal court Thursday that a suit brought by a director at the National Labor Relations Board is unconstitutional.