* Do you think the US has the infrastructure available to screen the facebooks of all 75 million tourists who come to the US every year?* That's exactly the pr

* Do you think the US has the infrastructure available to screen the facebooks of all 75 million tourists who come to the US every year?* That's exactly the problem: A queue of charlatans ready to sell Homeland Security bogus analysis of social media posts, with the predictable pernicious results.