Biden’s stupidity is apparently contagious.

WASHINGTON — Ron Klain, Vice President Biden’s former chief of staff, went to bat for the Obama administration Thursday afternoon as he swatted away suggestions from Rick Perry and Mitt Romney that global warming isn’t caused by people.

“They’re playing to their base,” Klain said on MSNBC. “It’s primary politics.”

In defense of global warming being a man-made problem, Klain cited “hurricanes” and “a record year for tornadoes,” also claiming that Republicans are citing information from “scientists and researchers sponsored by the oil industry.”