The line is less clear than you suggest: http://thehill.com/blogs/hillicon-valley/technology/141645-spanish-website-owner-pledges-to-fight-dhs-after-his-domain-

The line is less clear than you suggest: http://thehill.com/blogs/hillicon-valley/technology/141645-spanish-website-owner-pledges-to-fight-dhs-after-his-domain-name-is-seized http://thehill.com/blogs/hillicon-valley/technology/141645-s... (summary: Spanish site links to, but does not mirror, copyrighted material; Spanish courts finally say it's legal; DHS still seizes it). In the above case, (almost) no crimes were committed by anyone in an area the US has jurisdiction over; fulltiltpoker.com, at least, could be said to be actively recruiting Americans.