NORTH BEND -- Republican presidential candidate John McCain participated in a roundtable discussion on environmental issues today at the Cedar River Watershed Education Center in Eastern King County. McCain, a U.S. senator from Arizona, was joined by a wide slate of interested parties, ranging from Public Lands Commissioner Doug Sutherland to REI CEO Sally Jewel, former Gov. Dan Evans and Mercer Island City Councilman Steve Litzow along with a handful of local business and non-profit group leaders.