Hmmm it's a tricky one. Imagine if a IVF clinic provided IVF for couple of whom one was a convicted paedophile, that person became a parent, and then they went on to abuse the child - could the IVF clinic not get in trouble for assisting a convicted paedophile to become a parent and have unlimited access to a child?
I know that anyone can have a baby traditionally without a police check, so it does seem unfair - but the reality is, with assisted fertility, you are now involving a third party in the process of conception - whereas traditional conception only involves the mother and father, and their own decisions in creating a child together. Surely it stands to reason that the third party involved in conception has a responsibility to ensure they are behaving in an ethical manner? If a mother wants to create a child with a convicted paedophile, then it is only HER morals that are involved in making that decision (and the paedophile themselves). But if a IVF clinic becomes involved, they have a moral responsibility to the child, to the parents, and to society as a whole.