Suspicious Activity Reports (SARs) and Currency Transaction Reports (CTRs). I’ve also noticed (perhaps this is not recent though) the max cash limit at some ATMs reduced from $500 to $400. If you purchase $1000 or more in USPS money orders, the rep will take a copy of your government identification.

https://www.occ.treas.gov/topics/supervision-and-examination...

https://www.fincen.gov/system/files/shared/CTRPamphlet.pdf