Engadget:

AT&T and T-Mobile have started rolling out cross-network call authentication services for their subscribers. That means the companies will now be able notify their customers if the call they’re getting from the other carrier truly is from the number shown on screen or if it’s a spoofed robocall.

Details in the linked post, but seems to me, this is a problem of our own creation. Why not just disable the ability to spoof entirely? If a call comes in that is not on my contact list, I want to see the true phone number, no fake names allowed.

No fines. Just break the spoofing mechanism in the first place. And first carrier to make this happen wins my business.