AP Photo/Isabella County Sheriff's Department, File

( November 20, 2012 )

FILE - This undated file photo provided by the Isabella County Sheriff's Department in Mount Pleasant, Mich. shows William Merrill, a Central Michigan University professor specializing in Internet censorship issues, who was arrested on child pornography charges, accused of having offensive material on his university computer. Merrill was due in court Tuesday, Nov. 20, 2012 in Flint, Mich., where Merrill is being charged in federal court with possession of child pornography. (AP Photo/Isabella County Sheriff's Department, File)