Same no message left. Caller ID says Henry Huberty

We have been trying to reach you to lower your credit card interest rate.  This is your final notice!  Some guy's number has been spoofed.

Why are calls from overseas (especially India) allowed to go through with spoofed American Numbers. I would challenge someone to explain why this has any legitimate business use (other than scams) at all.
Since the Government refuses to enforce their do not call laws, is it time for some vigilante action?

There are vast numbers of legitimate business, academic, and personal calls between the US and India every day.  It would be nearly impossible to separate the legitimate calls from the scams.

Many calls, both legitimate and scam, are made by Voice Over Internet Protocol, using internet cables instead of phone lines.  They connect to the US phone system at an internet connection in the US.  That makes the calls even harder to trace.

How do you expect them to be stopped?