In the last few weeks, the FDA has started to limit COVID vaccine approvals, limiting their use in healthy people under 65 years of age, and HHS Secretary Robert F. Kennedy Jr. appeared to unilaterally take down CDC guidance that recommended their use in pregnant women and healthy children.

"We are going to continue to figure out new ways of accelerating approvals for drugs and treatments that treat rare diseases, and we're going to make this country the hub of biotechnology innovation,...