The lawmakers accuse Pfizer, Merck, J&J, AbbVie and Amgen of paying little to nothing in federal taxes despite generating billions of dollars annually.
Companies like AstraZeneca, Daiichi Sankyo, Pfizer and Merck are learning from previous setbacks in the ADC space to improve their efficacy and safety.
Some experts say the move undermines science, disrupts a trusted regulatory process and could sow public distrust in vaccinations and federal health agencies.