Because one of the biggest makers of non-recycled paper products in the U.S., Georgia Pacific, is owned by Koch Industries, one of the major players behind the union-busting going on in Wisconsin and other states.
Here is a list of paper products to boycott:
Quilted Northern Ultra Plush®
Quilted Northern Soft & Strong®
Soft n' Gentle®
Cups & Tableware
So, how about some good alternatives?
CVS 100% recycled paper products
Safeway's Bright Green paper products
All of the above are 100% recycled. Marcal and Seventh Generation can be a little pricey unless you get them on sale, but CVS recycled, Safeway's Bright Green, and Trader Joe's are all very affordable.