Never mind the court orders obtained to thwart Volt Typhoon botnet
FISA Section 702 allows the FBI and its fellow federal organizations to monitor foreigners' electronic communications beyond America's borders. But if these emails, texts, and phone calls are with or about US persons, those individuals and organizations' data can get pulled in as well for analysis, along with anyone those US persons also talked to.
The FBI has been a shitstain on society since it's inception. I don't deny the necessity of a Federal investigative service, just this one was never it.