(CBS) — One of the top Republican candidates for President made a stop in Chicago Monday.

Wisconsin Gov. Scott Walker made an appearance at the Billy Goat Tavern located beneath the Magnificent Mile.

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He would not take the bait when asked about fellow GOP candidate Donald Trump, who said Wisconsin is a “mess” under Walker’s leadership.

“Donald Stump can speak fine for Donald Trump,” Walker told reporters. “I’m going to tell people what I’m for, not who I’m against.”

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Walker, his wife and two sons as well as media from across Wisconsin and Chicago were there.

Walker says he’s not worried about his anti-union reputation with Illinois voters.

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He was expected to attend a fundraiser Monday and then head to Philadelphia Tuesday.