Can you clone humans

Not yet, although it is more than likely possible.

Research into this has legal and ethical considerations, not the least of which is the creation of test zygotes and fetuses that would be required, many of which would be unsuccessful.

The process if in vitro fertilization can also create excess fertilized eggs, and implantation or termination occurs at a very low stage of development. But there are still moral and religious objections if these eggs are destroyed or allowed to die.