Uscis new act asking aliens to carry papers all the time

This isn't new, this has been the law for decades.

In fact I just wasted five minutes trying to figure out when that section of the act was last amended and it looks sub-sec f was added in 1996 so sub-sec e has been around since before then.

Most permanent residents either ignore it or carry a photocopy since replacing the actual green card if your wallet gets stolen is both a pain and expensive.