Also, the US did not adopt the Common Reporting Standard from the OECD in the wake of the Panama Papers leak. So it does not report banking activity happening

Also, the US did not adopt the Common Reporting Standard from the OECD in the wake of the Panama Papers leak. So it does not report banking activity happening inside to the US to other countries. The Paradise Papers may spur additional legislative action, pending the results of the 2020 elections.