Not sure, but he doesn't appear to be incarcerated just yet.
https://people.com/politics/bush-family-first-christmas-without-george-hw-barbara-bush/
Rebuilding the Wall of Jerusalem (Nehemiah 1:1-7:73)
When Nehemiah heard that the walls of Jerusalem were still broken down more than a half-century after the completion of the rebuilding of the temple...(Neh. 1:4). Implicitly, he was formulating a plan to remedy the situation in Jerusalem.
God led Nehemiah to work on the walls, no less than he led Ezra to work on the temple. Both the sacred and the secular were necessary to fulfill God’s plan to restore the nation of Israel. If the walls were unfinished, the temple was unfinished too. The work was of a single piece. The reason for this is easy to understand. Without a wall, no city in the ancient Near East was safe from bandits, gangs and wild animals, even though the empire might be at peace. The more economically and culturally developed a city was, the greater the value of things in the city, and the greater the need for the wall. The temple, with its rich decorations, would have been particularly at risk. Practically speaking, no wall means no city, and no city means no temple.
https://www.theologyofwork.org/old-testament/ezra-nehemiah-esther/nehemiah/restoration-of-the-wall-of-jerusalem-nehemiah-11-773
Nehemiah was also a bold man, not afraid to ask others to help when he knew they had the resources to help. Once the king (Artaxerxes) was willing to be a part of Nehemiah’s goal (it pleased the king to send me), he went right on to ask for an official seal of approval on the project (letters… for the governors) and for the king to finance the project (that he must give me timber).
g. And the king granted them to me according to the good hand of my God upon me: Though this was a pagan king, Nehemiah still understood that God could work through him in a mighty way. God can provide for our needs in totally unexpected or unlikely ways.
https://enduringword.com/bible-commentary/nehemiah-2/