Sorry, but this is just completely wrong. The law regarding patentable subject matter is almost entirely judge-made. There are broad categories of inventions in software, medicine, business methods, and elsewhere that clearly were not eligible for patent protection in 1980 and are eligible for patent protection under recent court decisions. This didn't change because Congress passed new legislation. It changed because the courts (primarily the Federal Circuit) changed its mind. Given that fact, it makes sense to criticize the courts for continuing to expand the bounds of patentable subject matter, no?