So, if what the article says is true, it should be inadmissible in any other kind of preceding once a judge gets in the mix. The real problem is that it appears

So, if what the article says is true, it should be inadmissible in any other kind of preceding once a judge gets in the mix. The real problem is that it appears that there's no due process in issuing the subpoena, at least what it seems like. A normal subpoena can be objected to and limited if it's not valid, though most third parties have little incentive to fight it. The problem is that all of this information is being collected and is subject to subpoena. Just because they don't get it with one of these doesn't mean it can't be had. So the reason no one is paying any attention is because until they have an example of it being used to do anything other than collect data. That can be bad, but it's not the same as it being used later to, say, prosecute people.