Sens. Warren and Blumenthal investigate NLRB decision to drop charges against SpaceX for retaliatory firings by CNBC Markets | April 16, 2026 5:47 pm | US Markets Sens. Elizabeth Warren, D-Mass., and Richard Blumenthal, D-Conn., are investigating the NLRB after it dropped charges against Elon Musk’s SpaceX in February over retaliatory firings.