I'm going to assume the post about Costco being a liberal company is in response to their stance on raising the minimum wage. Costco has always paid their employees far better than the norm for "common" retail store positions. They know that if the minimum wage is raised to something like $15/hr., its going to put a LOT of their competition on the curb.
I personally have always resented the concept of a retail store making me pay them up front money just for the privilege to shop in their store. That's just me. :)