I wonder the same thing. Civil Asset Forfeiture is at least as awful and should offend everyone regardless of their stance on current political hot topics. Yet it appears to go on unaddressed.
I think for most people in the US, this wouldn't make their top 50 list of things wrong with the US, or our legal system in particular. And many of those people would probably read about this, shrug, and think "eh, nothing in my old emails that I care if the government sees".
It's actually super weird, because US culture has a strong component of distrust of government. But the government is pretty good at making people fear crime, terrorism, etc., which allows them to get the people to "trust" them with mass surveillance and other privacy invasions.
