To report child sexual exploitation or pornographic material involving minors—including digital, AI-generated, or cartoon depictions—you should contact one of the following official authorities in the U.S.:

1. National Center for Missing & Exploited Children (NCMEC)

2. FBI – Internet Crime Complaint Center (IC3)

3. U.S. Department of Justice – Child Exploitation and Obscenity Section (CEOS)

4. Homeland Security Investigations (HSI)

You're Not Sure
Start with https://report.cybertip.org — it's the most centralized, law-enforcement-connected option.

Let me know if you need help writing a report or want to remain anonymous—many options support that.