Libraries have always been squarely against book banning however. Dr. Seuss is an immensely popular and historic children's author. No reason his books should not be in any library children's section.
No one is saying, "Stop all Seuss books from entering libraries". The publisher stopped printing a small subset of books. Oh the places you go will still have plenty of shelf space and be given to every graduating senior for quite a while I'm sure.
No the publisher can't do anything but likely the books in circulation will quickly be stolen. Most libraries don't even charge fines for non-returned materials anymore.