Even if the Court narrows the scope of honest-services fraud when it issues its ruling, probably next year, that may only lead to reduced sentences or perhaps retrials for the two supplicants.
This will allow around 800 prisoners from the Shining Path terrorist group, including Abimael Guzmán, its notorious leader, who were convicted in military tribunals to demand retrials by civilian courts.
The study examined every capital case heard between 1973 and 1995, and found that errors led to retrials in 68% of death-penalty cases, with 82% of those defendants ultimately receiving lesser sentences.
All are facing retrials because Peru's Constitutional Tribunal ruled last year that many of the country's anti-terrorism laws, specifically those that allowed civilians to be tried in military courts, were unconstitutional.
In Louisiana, Curtis Kyles had three retrials before he was reprieved; the prosecution did not reveal to the defence that their chief informant had himself been let off a murder charge in exchange for his co-operation.
Non-Islamist vice-presidents are another possibility, as well as retrials of all officials involved in the killing of protesters.
California has just set up a task force, to which Mr Tiersma belongs, to put jury instructions into plainer language.Lawyers fret that any attempt to put statutory terms into ordinary English could make retrials more likely.
There was little protest at some parts of the decree, such as the second attempt to sack the public prosecutor and to allow for retrials of former regime henchmen.
Indeed, the trials are likely to last years longer while all appeals, motions for retrials, and other legal stratagems are used.
In September, 12 of the defendants successfully appealed for retrials of money-laundering and conspiracy charges, on the grounds that the guilty verdicts were reached by slim majorities.
It rejected applications for retrials for Mr Sayeedi and other defendants.
