Does escalating spat with Trump pose regulatory threat for Musk's businesses?

Donald Trump wants a review of subsidies for Elon Musk's firms. This raises concerns about regulations for Tesla and SpaceX. Several U.S. agencies oversee Musk's ventures. These include the NHTSA, FCC, FDA, EPA, FAA, SEC, and FTC. They monitor safety, spectrum use, clinical trials, environment, launches, securities, and consumer protection. Investigations and potential fines are ongoing for some companies.