Viewpoint: Yes, therapeutic cloning is so fraught with controversy, and the technique is so far from perfect, that it may be decades before it is put into practical use.

Viewpoint: No, recent scientific advances in the area of therapeutic cloning indicate that cures for diseases such as diabetes and Parkinson's are possible in the not-too-distant future.

In July 2001, after a heated debate about human cloning, the U.S. House of Representatives voted to institute a total ban on all forms of human cloning. The House bill classified human cloning as a crime punishable by fines and...