Had alignment done, car still veers right?

Hi! I just had a brand new set of BF Goodrich tires installed on my car. The technician recommended having my alignment done because the treadwear on my outgoing set was very uneven. I also knew this since my car had been pulling severly to the right. Later that day, I had my alignment done at a local tire shop. The technician stated that BF Goodrich radials have a tendency to pull to the right. "They're just doing what they do..." Is this true? My car still pulls to the right, although not as severly as before. Doesn't havng an alignment job done mean my car will go straight if I let go of the wheel?