most likely wrangler five star jeans due to comfort, mobility, and because they are the standard Canadian jeans out west since the 1940sActually, in one recent comic, he's shown wearing Lee jeans...
According to the blog site of Framedirect.com, he wears the Ray Ban 3217, color 006/71. http://www.framesdirect.com/eyewear-blog/political-eyewear/ To me, they look more like ray-Ban RB3322