> So you prefer the risk of massive law infringement, including invasive species smuggling, drug running, and terrorism, to a 5% risk that somebody who shouldn't know about Natalie Portman's meal choices finds out whether she's keeping Kosher? No operation on the scale of COINTELPRO could come from the TSA, because the TSA doesn't have the resources to pull it off.
I'm afraid that's a straw man argument. It's not been shown that the massive metadata gathering on USA citizens has been effective against any of those. Where are the convictions? NSA data gathering, in fact, is not supposed to be applied to domestic communications. It's far more useful, and demonstrably so, for internal political abuse. Look at the history of the Stasi for examples of how decades of broad information gathering can be used against moral, law abiding citizens.
Decentralizing the databases, spreading them out, is actually a good goal. Broad, flexible databases with large amounts of data are much easier to steal, and much easier to abuse, than smaller, isolated systems. That's a harsh lesson from decades of security work. And "random searches" are much safer than having it all stored in a central database where it can, and it _will_ be used for political and personal abuse.