KFF Health News Mar 6 2026 Marc Ernstoff, a physician who has pioneered immunotherapy research and treatments for cancer patients, said his work as a federal scientist proved untenable under the Trump administration. Philip Stewart, a Rocky Mountain Laboratories researcher focused on tick-borne diseases, said he retired two years earlier than planned because of hurdles that made it too challenging to do his job well. Alexa Romberg, an addiction prevention scientist focused on tobacco, said she "