To every US Citizen who replies “what's the big deal?” keep in mind most countries maintain a sort of reciprocity, whatever the US government does to their citizens to enter, they may, out of pique or their own laws, do to Americans entering their country.
Given the execrable ability of the US government to keep even its own top-secret confidential information secure, I have absolutely no faith that this information will be securely maintained, nor that it will be solely used to profile visitors solely at the “border”.
Given the execrable ability of the US government to keep even its own top-secret confidential information secure, I have absolutely no faith that this information will be securely maintained, nor that it will be solely used to profile visitors solely at the “border”.