A security researcher involved with the Wikileaks web site was allegedly detained by U.S. agents at the border for three hours and questioned about the whistleblower project as he entered the country on Thursday to attend a hacker conference in Las Vegas.  (Elinor Mills, Researcher detained at U.S. border, questioned about Wikileaks (July 31, 2010) news.cnet.com.)  In other words, discover the truth at your own risk.  While I believe that a sovereign nation may need to engage in covert activity for national security and national interest purposes, I don't support the almost unaccountable power used to examine those who learn about secret activities.