Well if we did that, our diplomats would be in constant danger the world over, and wouldn’t have to have done anything other than be American diplomats. So I humbly have to disagree with you on this issue. While it may sound good, it would have terrible re-percussive consequences.
Yeah, next thing you know a muzzi government somewhere would be grabbing hostages and holding them hostage for 444 days, or maybe they'd blow up one of our embassies and kill the ambassador and his staff.
You can’t be diplomat AND commit crimes
Unless you mean that total immunity is a requirement so that you cannot be FALSELY accused of crimes.
But I submit that there should be some agreement where a country must provide proof of actual criminal behavior to the diplomats country, and if they are guilty they should be held liable.