Joe Biden takes a swipe at Ron Johnson's comments on climate change President Joe Biden used Republican U.S. Sen. Ron Johnson as a political foil Wednesday. During an appearance at McHenry County College in Crystal Lake, Illinois, Biden took a swipe at Johnson's recent comments downplaying climate change. Biden told the audience that from 2010 to 2020 Illinois experienced "49 extreme weather events." "Although I heard today from a senator north of here, that Republican Senator, there is no global warming," Biden said. "No such thing." Biden was referring to comments Johnson made in early June during the Republican Women of Greater Wisconsin Luncheon at Alioto's in Wauwatosa.