I don’t think there was any human cloning taking place in 1942, the year Beijing Biden was born.
BUT. He said it here on the interwebs, so, you know.
How much of a DNA strand is needed to produce a clone of an adult human being? How long does it take to germinate the clone? Is it a 9 month process or a 1 month process? A clone is not a human being and would not have a soul. Think of the ethical issues surrounding the technology.