The government has the information on what people have claimed on tax returns. The press has the documents from Panama.
Until the 2 get matched up there won't be any hard evidence of a crime.
I understand that, which is why I was surprised to see crimes being discussed early.
I am guessing the press didn't want to turn the documents over to governments and wait until crimes were found to release this.
Interestingly, no Americans are in the released data that I have seen, I suspect some governments have negotiated no release of the information till they pursue the potential crimes.
I expect data on Americans to have been present and think that this data is already in US government hands.