By urging his release, the US wants Egypt to short-circuit the process of law and to release the spy before the prosecuting authorities have had a chance to present their case. This seems wrong. He should be put on trial and if found innocent then he should be released. If found guilty, then the court should hand down a punishment in accordance with Egyptian law. Israel can then appeal for clemency, like they are having to appeal to the US on behalf of Jonathan Pollard.
Greece stock market hit with more losses as banking shares plunge (Reuters)