Unions can lobby congress... Corporations can lobby congress.Unions are member funded organizations that represent WORKERS.
Corporations are businesses that that work for shareholders.
..and that is why it is so nice to see some of the big unions supporting the national healthcare bills - and more are being added every day. I fully support unions - I worked in one only for a short time - 6 years before I switched to 20 years in non profit non unionized. If not for unions, we would not be assured of many of the rights as workers we have today. Do I think at times they might be over the top? I do. But overall I look at the way that companies were forced to change their practices because of unions and those changes have been for the benefit of us all.
People in unionized settings generally have better benefits including vacation, sick time, insurance and adherence to policies determined in the safety acts. swife.