A huge coalition of human rights groups, trade groups, civil liberties groups, and individual legal, technical and security experts have signed an open letter to the Department of Homeland Security in reaction to Secretary John Kelly’s remarks to House Homeland Security Committee earlier this month, where he said the DHS might force visitors to America to divulge their social media logins as a condition of entry.
The letter points out that the years’ worth of private data — including commercially sensitive information; privileged communications with doctors, therapists and attorneys; and personal information of an intimate and private nature — that the DHS could access this way would not belong only to non-US persons (who are, of course, deserving of privacy!), but also US persons, whose lives the DHS would be able to peer into without warrant, oversight or limitation.
The letter also points out that once America starts demanding this of foreigners visiting its shores, other governments will definitely reciprocate — so American travelers would be forced to reveal everything from trade secrets to the most personal moments with their loved ones with governments hostile to US interests.
Trade disputes tend to devolve into tit-for-tat retaliation. Initiatives like this will work exactly the same way (except you can be certain that politicians will hold out for their own right to privacy while demanding that private citizens and foreigners give up theirs).