They're either sniffing their own farts or they've kidnapped him to try divide and conquer.
The real question is does Venezuela have contingencies for what to do if their head of state is incapable of performing their functions and to prevent division.
I have seen no mention of Vice President of Venezuela, is that not who is next in line should Maduro be incapable of performing his duties? Which makes me to believe that USA officials really may have taught he's an absolute dictator single handedly pulling the strings, but I'm assuming that's not true. Americans should know better than anyone what happens when their president is murdered. You don't just overthrow the whole fucking government, there's literally a Vice Presidential role