Senators Elizabeth Warren and Richard Blumenthal have launched an investigation into the National Labor Relations Board's decision to drop charges against SpaceX for allegedly retaliating against employees who were terminated from the company.

The NLRB had previously filed complaints against SpaceX, alleging the company engaged in retaliatory firings of workers. The specific circumstances surrounding the original charges and the board's subsequent decision to dismiss them were not immediately detailed.

Warren, a Massachusetts Democrat, and Blumenthal, a Connecticut Democrat, are both known for their oversight of corporate practices and labor issues. Their investigation suggests concern about the NLRB's handling of the SpaceX case and potential implications for worker protections.

The investigation comes amid broader scrutiny of SpaceX and its business practices. The company, led by Elon Musk, has faced various regulatory and legal challenges while maintaining significant contracts with government agencies including the Pentagon.

Neither SpaceX nor the NLRB immediately responded to requests for comment regarding the senators' investigation. The timeline for the senators' inquiry and what specific actions they may take remains unclear.