Why cant we Sue the US Government?

I don’t see why we can’t sue the US government for Blanton disregard for endangering the United States. We as citizens have the right to take this argument to the World Court as a people; we don’t need to be represented by a government. Non-Governmental Agencies in the world do it all the time.

Also, why cant we get these radical groups that come out and talk about the overthrow a part of the US, specially when you have Congressman and assemblymen attending forums that basically advocate the overthrow of the US. There are certain freedoms of speech protected but when it comes to openness about overthrow it is called a Clear and Present Danger and there are many cases in the 60 yrs to show just that.

So any ideas about all of this. I think we need to look into going after these politicians for breaking thier Oath to the Constitution.