O'Malley returning to "Face the Nation" Maryland Governor Martin O' Malley speaks on "Face the Nation" in October. (Photo by Chris Usher/CBS News via Getty Images) Maryland Gov. Martin O'Malley (D) is booked to face off Sunday against Wisconsin Gov. Scott Walker (R) on CBS's "Face the Nation." O'Malley, who has become a regular on the Sunday talk show circuit, will discuss "the view from the states" in the wake of this week's Supreme Court ruling on health care, according to a show promotion. As chairman of the Democratic Governors Association, O'Malley recently tried unsuccessfully to remove Walker from office in Wisconsin's recall election. Maryland has been among the more aggressive states in implementing President Obama's health care law. On Friday, O'Malley participated in a conference call with reporters on the subject that was organized by the Obama campaign.