FCC bars providers for non-compliance with robocall protections

Good start. Next, put the people running these scam phone providers in jail.

How many are based in the US and subject to US-based prosecution?

Why can someone from outside the US make my phone ring? Why can't I opt out of calls sourced internationally? Seems like an easy way to fix the problem. There is no reason for anyone overseas to call me, and if someone US-based does phone spamming, we can prosecute them.

You're right, it is an easy technical fix.

Mainland China lets people opt out of phone calls that come from outside of the Mainland...it's a feature one can turn off on an on their mobile plan.

Calls from outside the Mainland always cause a warning to pop up on the receiving user's phone that says something like "this call is coming from outside of the mainland, be careful of being scammed".

I can imagine there are many reasons the US doesn't fix this..one of which probably that much of US customer service is outsourced to people outside the US!

>I can imagine there are many reasons the US doesn't fix this..one of which probably that much of US customer service is outsourced to people outside the US!

This. Gotta have your round robin of foreign call centers be able to spoof the main customer service line numbers for whoever they're contracted to represent.

Personally I think that should all be done in software these days, not something supported at the teleco level but what do I know.

This isn't even an unreasonable feature to implement. We just need something like SSL certs: Has Legitimate Business holding phone number XYZ granted other entity the right to use their identity?