Walker also sent the president a letter on Wednesday on the propane issue.
Walker says he will greet Obama when he arrives in Milwaukee, but he will not join him for his tour and speech at the General Electric gas engine facility in Waukesha. Walker says he needs to return to Madison for a meeting of the state jobs agency.
Democratic candidate for governor Mary Burke spoke with Obama on the phone Wednesday. Burke says in a Twitter message that she shared concerns of the middle class with Obama during the conversation.
Burke will not be joining Obama at his Wisconsin event.