"They didn't make the next connection saying that it leads to violent behavior, but there are no studies done. So I recommended to the President that we do significant research."
Actually, there have been quite a few studies done. Most found no link at all. Some that found a link were later debunked by peer review. Some that found a link, only found a link in mentally disturbed individuals. As long as guns themselves are being researched as vigorously as video games, I think it's fine to research. Because I'm 99% sure they'd find guns are more related to gun violence than video games or movies.