The UK banned them several years ago, and collected up and destroyed all the
ones they could find. Personally, I think that's not right... overkill.
Yes, they have been known to maul children, sometimes to death, but those
cases are actually pretty rare compared to the total population of the dogs
(they were very popular in the UK.)

According to this news story
http://www2.wjtv.com/jtv/news/local/...il_ 16/11672/
current owners are grandfathered but only for one dog. That would
really be a difficult position to be put into if you own more than one
of the banned dogs. How sad.