Pemmer Harge wrote:
...Wasn't it established in The Menagerie that the Federation only has the death penalty for one offence: travelling to Talos IV? Which made even less sense than having the death penalty for treason, but...
Yep, it was.
And, since the 24th century Federation was more evolved & understandin' a society, it doesn't make sense to have added the death penalty to other offenses.