" In the UK etc when a clearance is read back the controller is obliged to listen and report to the pilot that the clearance readback is correct. Is this true in the US? I have not seen anything to say so, and always assumed that reading back the clearance gave the controller the chance to correct errors, but that the controller was not legally obliged to do so. It is unusual for a US controller to tell me that I was "correct". "
In the U.S., for a ground delivered IFR clearance anyway.....they always say "readback correct", or give corrections if needed.