Adding: this just occured to me... Corgis are herding dogs that still very much have the herding instinct. Ein's absolute favorite game in the entire world is to herd other dogs (either Tucker and Colleen or dogs at the dog park) or herd children (Lucas' cousin lives 45 minutes away and has 3 kids that Ein adores).
I have read that because they still hold the herding instinct, some corgis may nip at children's heels the way they would nip at a cow's heels when herding it. Ein has always been wonderful with children, so I have no personal experience to back that up. But perhaps because of this, the shelter doesn't want to be responsible if a corgi nips at the heels of a child in it's new family and accidently hurts the child?
Ein will chase after 7 year old Jacob all day long, but I've never seen him nip at him. He just wants to chase him. Megan is probably around 16 months, and Ein is very gentle with her. When her oldest brother (14, I think?) play wrestles with her, Ein gets upset and starts barking at Dillon because he's being protective of Megan. Megan is also the only one who he will sit absolutely still for so that she can pet him. He'll jump up on the bigger kids and lick their faces, but has never tried to jump on Megan. The first time he saw her, she was just a few months old, and he instinctively knew to be gentle. Even when I was holding her, Mr. Jealous did not paw at her, try and climb in my lap because he wanted my attention for himself, etc. He's very loving with children.
Corgis can be excellent additions to the family, so I really do hope you are able to find one.
Okay, sorry I wrote a book. I just love talking about my baby.