The FTC and top communications companies are meeting, to determine what they can do to stop robocalls and other illegal calls.  Here is a link to a frequently updated page, showing the history and progress of their initiatives, as well as recent Congressional bills:

http://www.phonehelp.2truth.com/initiatives.html

(I strongly suggest you read the history and progress of
H.R.2669 - Anti-Spoofing Act of 2015
amd
S.2558 - Spoofing Prevention Act of 2016
to learn how [slowly] bills progress through our Congressional system.)

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Please reply to this post, to let us know you read it, or have taken suitable actions to protect yourself.