400 deaths seems to be the highball figure. 10 percent of that would still be 40 deaths.
One possible scenario is that Bill Clinton became integrated into the deep state/narco nexus as govenor of Arkansas in the 80s, the Clinton Foundation political slush fund being an addition to this network.
This scenario would require a considerable number of 'silencings' of one kind or another, especially if the network sought the office of US president in addition to their LatAm holdings.