The Supreme Court invented broad prosecutorial immunity in 1976. Prosecutors can recruit false witnesses, have huge personal interests in the case, can lie, and lie to witnesses, and they are immune from legal action. AS long as this happens before a trial, they are immune.
The Supreme Court ruled this to be so.
“Firming up what had long been held as common practice, the U.S. Supreme Court in 1976 ruled in Imbler v. Pachtman that prosecutors cannot face civil lawsuits for prosecutorial abuses, no matter how severe.”[1]
If they are immune from the law, then as moral zeros they should be ventilated.
This was in Great Britain, what the SCOTUS rules is irrelevant.
Some prosecutors take advantage of that too.I remember one guy that sent several innocent men to death row before he was exposed. One man had already been executed but the rest of them were exonerated.