I think that we can solve two problems.
First, we have a lot of people on death row in prisons across the US. They are a cost to the state; they will be put to death anyway, and that sort of legal wrangling can go on for decades.
Second, we have lots of hungry tigers. They need to eat flesh in order to thrive.
My solution: send people who are destined for capital punishment to Africa or Asia – wherever these hungry tigers are. Let them loose in the jungle together.
If the humans survive, great. One assumes that they have been rehabilitated. If the tigers eat them, then, we have fewer criminals and fewer hungry tigers.