salam bro
umm put it this way, cloning any organism in general is not haram in itself, because you're not creating anything out of nothing and no one will ever be able to do that.
But what makes it contentious.. is that problems that result from this is what can make it Haram, and i'm not a scholar in a position to make a fatwa but i can tell you the problems with it.
1. There's a risk of making a parent-less generation of kids who's parent is a machine. meaning that they won't have teh chacne of being brought up properly or cared for like a normal child. Child care is definately not the solution.
2. Scientists have their fears that there's no guarentee that cloned creatuers could have weaknesses such as being receptive to diseases whcih, in the past may have been unable to get to humans due to immune system deficiences or thing sof that like...
basicaly the same argument that applies to G.M. food applies here as well.. except that its on a more dangerous level.. you're dealing with humans and alot of trouble can start.
Afterall Allah's natural laws are the most perfect so why mess aroudn with his creation and endup in a misery. I see it's best to avoid it.
However, Biomedical engineering is an awesome area to delve into.. things like creating robotic hands and limbs are a GREEATT way to help people who desperately need such thing, and it doesnt pose any social or physical danger inshalah.. no where near as much as cloning living things atleast..
all the best salams