Re: What is happening in the USA
According to the article, the action was taken in this case by the legislature and governor of Illinois, as is proper. It had nothing to do with a US or state court. That said, a federal or state court, if presented with a case, might well find that using a stingray to track an individual requires a warrant or other court order. Similar things have happened in the past, as with Riley v California, where a judge found that searching a cell phone incident to arrest normally is to be considered a fourth amendment search requiring a warrant.