As he committed crimes that can be tried in State court, the last Texas Court to hear John's case is the Texas Supreme Court.
In every state there exists a judicial system that is similar to the federal system because there is a Supreme Court.
The state Supreme Court is the highest judicial court in a state which means that the final court for John in the state of Texas is the Texas Supreme Court.
Find out more on supreme courts at https://brainly.com/question/2324092.