It's analogous to the police acting on a warrant to
close a store front selling counterfeit goods
I'm amazed that Americans are comfortable with their leaders going down this road. It's been done before and has rarely ended well.
Yes, there is. The issue is whether anybody should have the power to grant such a warrant, not that warrants were not obtained.
A seizure warrant, as signed by a judge. (Compare "search warrant", "arrest warrant").
Nobody is being charged with a crime.
That's not what a warrant is. Warrants are issued on the basis of probable cause. You probably understand this already with regard to search warrants: a prosecutor doesn't have to have filed charges against a person before the police can obtain a search warrant in the course of investigating the crime. The police only need to show that there is cause to conduct the search.
But more to the point of people not being charged: I'm not conversant in every relevant detail, but I presume the reason nobody is being charged in these cases is that the owners of these domains are unknown and outside of the US, besides. But again: nobody being charged doesn't mean warrants weren't issued for the seizures. The two are not the same thing.
Here is an example of a warrant of seizure issued by the United States District Court, Southern District of New York to "Any Department of Homeland Security, Immigration and Customs Enforcement Special Agent or any other law enforcement officer authorized by law" to seize certain domains:
http://www.courthousenews.com/2010/06/30/Warrant.pdf
I apologize for not expending the energy to produce a copy of every warrant for every domain ever seized, but I am not personally burdened with such indomitable doubts as to their existence that others seem to be.
Still reading this warrant, it is so vague what the charges are. And I wonder, among all the people that had domains seized, were any found not-guilty and had their domains returned? Somehow I doubt it.
This whole world is completely insane. "Your" representatives couldn't fix it even if they wanted to. Revolution is the only way out of this mess.
In other words: things will end up different because revolutions (amongst other change agents) have brought us to where we are, which still is a lot better than were we started.