CBP is doing it electronically for quite some time, as they can see your date of entry in the system and they are not controlling your date of leave against passport when you are leaving USA (you won't even meet CBP at that stage), but it is all checked electronically.
Last time I got stamped. But it seems like an exception than a rule.
A lot of countries don’t stamp passports — if you can guarantee the entry is immediately recorded in your central database, and you can reliably look up the latest entry for a given passport, a stamp doesn’t really gain much.
Last time I got stamped. But it seems like an exception than a rule.
https://www.swlaw.com/publication/immigration-alert-cbp-elim...
I can already see myself arguing with ICE officer that CBP is not stamping passport for years.