> In the name of national security

This is detrimental to national security. It's irresponsible and negligence at best. There is no such thing as bullet-proof cyber-security measures and all these data leaks in the last several years are evidence of that. The more data that is mined, the more information for intruders (foreign and domestic) to have access to. For example Russia could have penetrated America's NSA and used the data mined there to create profiles of people they could effortlessly manipulate in America's 2016 elections.