Most of the bishops do not believe in the devil (or are on his side--sorry, it's true). There may be a few but the US has fewer than 10 exorcists at last count. Most of the bishops put the false god of modern psychology before any thought of demonic temptation, let alone possession.
I know of one case in California where the bishop refuses to help a man with a very bad obsession despite the Catholic psychologist's outright pleas to the bishop for assistance.
St. John Fisher, pray for us!