Complex sentence: Among current issues with victim impact statements is their relative newness and a lack of research into their actual effectiveness against their theoretical goals, and legal issues surrounding the admissibility of facts in a victim impact statement that are materially adverse to an offender.
Split into simpler sentences: Among current issues with victim impact statements is their relative newness and a lack of research into their actual effectiveness against their theoretical goals. There are occasionally legal issues surrounding the admissibility of facts in a victim impact statement that are materially adverse to an offender.