President-elect Donald Trump’s choice for health secretary has suggested that the polio vaccine cost more lives than it saved and that the vaccine did not wipe out the disease in the U.S.

Attorney Aaron Siri filed the petition on behalf of Informed Consent Action Network, a group that questions vaccine safety. The petition criticizes the clinical trials done to license the polio vaccine manufactured by Sanofi Pasteur and argues it should not be administered until another trial is conducted.