This Times piece discusses its author’s distaste for political robocalls.

These calls are nothing but political spam, and since it is possible to thwart computer-spam transmissions, surely the technology exists, or can be devised, to block robocalls. I am aware of the First Amendment implications of what I am proposing, and they weigh on me. But I should be able to keep my home free of robocalls — an odious invasion of privacy, a burden on my precious time and a barrier to real and possibly important phone calls — if I so choose. Isn’t there an element of voluntarism that is integral to the precepts underpinning free speech?