If things don't work out it is not only the dog that suffers. A child gets hurt in the process and I will do everything in my power, as I assume most parents would, to prevent harm from coming to them. But I'm not sure why some folks insist on the fact that it must be a Border Collie or else. In general that is not a Border Collie. People make decisions concerning their own desires based on the welfare of their children every day.
Word of mouth is a very powerful tool and can be either a detriment or advantage.
I do not know a single experienced rescuer in the US that would not declare Border Collies to be problematic with small children. Page last updated May 31, 1997.