What are some controversial issues surrounding human genetic engineering?

Laws and codes vary widely depending on which country and state. Arranged marriages are a president which dates back thousands of years in some regions. In vito fertilization, sperm banks and embryo banks often go unregulated, as they are still quite rare. Gene splicing has met with strong opposition from a small minority in most free countries as has the use of cells from aborted embryos. The latter is illegal in the USA, but enforcement is weak. Neil