We can look for, and should expect help both from technology and from government. It seems to me naive to believe that either choice alone will do the job. It is not necessarily true that the government will bungle their end of the job. And it is unlikely that technology, one of our neon gods, will be sufficient.
Spammers are highly motivated to find their way around either barrier.
But remember, we charge the government with regulation of interstate trade, and with protecting us from fraud. If they do not, let's help them do better, or let's get a better government. Those are the choices. Lisa Wolniakowski Let's vote with our wallets.