 It's the last week of Pride Month, and it's also 20 years since same-sex marriages were first granted in the U.S. Public opinion has changed drastically regarding marriage equality since then, and according to a recent study, same-sex unions have benefited not just LGBTQ people, but the entire institution of marriage. ABC's Devin Dwyer explained the study, the legal journey, and the challenges remaining for LGBTQ people to Brad Milkey,