MADISON, Wis. (AP) – The secretary of the Wisconsin Department of Corrections and the head of the state employees union are both scheduled to testify before an Assembly Committee on Wednesday.   Corrections Secretary Ed Wall and a number of other officials from his department are scheduled to be at the informational hearing. Wall and the others are scheduled to provide an overview of the agency for members of the Assembly’s Corrections Committee.  Marty Beil, head of the Wisconsin State Employee Unions which represents prison guards, is also scheduled to speak.  Prison guards have been organizing an effort to separate from the WSEU and form their own union. The guards leaders have been engaged in bitter fights over election setbacks, discontent with labor leaders and anger over working conditions.