Probably not about dodgy pharma sites at all
The real issue is that pharmaceuticals are grossly overpriced in the US -- for example, there was an article this morning in the LA Times about how a tube of cold sore cream (made in the UK) that sells for $44ish in Canada gets a base price of around $2500 to the insurer. This gouging prompts people to go overseas -- primarily Canada -- to get medications if they can't get their insurers to eat the excess cost. Since we as a country are only interested in promoting free markets up to a point we've expended significant legal and lobby resources to prevent our citizens from purchasing medications from sites in Canada, so far without success. This looks like another attempt to stop this, so far another failed attempt.
Oh yes, and we went through all the 'you don't know what you're buying if you get it from overseas' PR stuff -- ad campaigns and so on. As if Canada was some dodgy third world backwater.