Asking the Stupid Questions Since 1971
I wonder if the US perspective on this is like the UK and Europe's perspective ca. 1840, when the US was using cheap (immigrant and slave) labor and becoming a manufacturing juggernaut. Even into the early 20th century, immigrant labor was the backbone of US manufacturing, and it took things like Sinclair's "The Jungle" to create public outrage and spark labor reform, thus creating opportunities for the current cheap labor markets.
Here's my dumb idea regarding comment spam. The problem is that the comment spammers are attempting to leverage your googlejuice to increase their googlejuice and, thus, their traffic. Now, I know you want to just kill 'em all, but why not host the comments at a site with intentionally negative page rank?
Like I said, it's a dumb idea.