Here are a few ways to rewrite the title in a formal tone, depending on your preference:
- The Presidency Issues Formal Admonition Against Immigration-Related Misinformation
- Presidency Cautions Against the Dissemination of Misinformation Regarding Immigration
- The Presidency Issues Warning Concerning Misinformation on Immigration Policy
Recommendation: The first option, “The Presidency Issues Formal Admonition Against Immigration-Related Misinformation,” is the most formal and authoritative.