It might be difficult to provide the truthful answers. For example, I don't remember all of my current phone numbers, let alone those that I might have used in

It might be difficult to provide the truthful answers. For example, I don't remember all of my current phone numbers, let alone those that I might have used in the past. Also, I don't remember all the names of fake SNS accounts I created, and don't remember throwaway email account names. Also, US three-letter agencies already have access to Google, Twitter, Facebook and have all necessary information, as Snowden has said, so I guess it makes no sense to provide it again. Maybe they just are trying to build a cause to be able to deport anyone from the country or reject entry. In this case it would be better to pass a law that allows to do it. Also this is a good reminder that you better not post too much details about yourself in social networks, otherwise it can be used against you. And Hackernews is not considered a social network, right?