Probably no compensation. Under "English" law (Canada is a Commonwealth country), the wrongful conviction will probably to taken to be without malice and reasonable given the information the US provided, so tough luck.
He might be able to negotiate an ex gratia payment, but this will be entirely at the whim of a politician, who will be looking to avoid being criticised for giving away government money
He might be able to negotiate an ex gratia payment, but this will be entirely at the whim of a politician, who will be looking to avoid being criticised for giving away government money