He didn't have to.
Basic way to describe it is if you're a getaway driver for a bank robbery and the people robbing it end up killing someone, even though you have no knowledge of that action & are outside the building, you can still get charged with that murder.
Same for Saul being involved in the Meth empire. All deaths caused in relation to the meth empire he can be charged with.
There's a nightmare story I always think of about this. There were 5 guys in the early 1900's that did a robbery gone bad and someone got murdered. One guy did the murder, but since it was a "criminal enterprise" they all got charged with murder. Most of the guys thought if they confessed to the robbery but not the murder that they'd be okay, but in reality they just sealed their own fate. New York used to have the death penalty as mandatory sentence for murder. All 5 of the guys got the electric chair, and they were all executed on the same night in 1912 at Sing Sing Prison...one after another, in quick succession (plus another 2 people for a different crime).
They'd kill one, wheel the body to the autopsy room and bring in the next guy. Gruesome shyt. They didn't speak great English (they were Italian immigrants) and some didn't even really know what was going on. They didn't all know why they were being killed, but they all heard each other being executed one at a time, and they even heard the buzz saws from the autopsy room 20 feet away (immediate autopsies were mandatory in NY at the time).
Here's an article about it, but be warned that it's pretty fukked up. Nightmare fuel shyt. Medieval shyt, and even for the early 1900's it was a gross human rights violation.
Sing Sing is a name synonymous with a grim history. Even its original name 'Sinck Sinck’ translates into English as ‘Stone upon stone.’ A myriad of tales abound of harsh discipline, bad food, forced labor and executions, especially executions. The legendary harshness of New York’s attitud...
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