If you can clone a sheep, you can almost certainly clone a human being. Essentially all reproduction is done these days with medical help - at delivery, and often before. With in vitro fertilization, the sperm and egg are combined in the lab and surgically implanted in the womb. The only difference is that the DNA of sperm and egg would be replaced by DNA from an adult cell.
Clones already exist.
We know them as identical twins. Just how many they share is a contentious topic in human biology. But genetic determinism is largely irrelevant to the cloning issue. They have their own identities, their own thoughts, and their own rights. Fear of clones is just another form of racism.