Thursday on the NewsHour, Hillary Clinton testifies before a Republican-led committee on the Benghazi attack. Also: American and Kurdish forces free Islamic State captives in Iraq, what happens when workers own a craft brewery, a priest’s mission to protect migrants…

Vice President Joe Biden will not join the presidential race, despite months of pondering the possibility. What drove his decision and how does it affect the other candidates in the race? Gwen Ifill gets perspective from Glenn Thrush of Politico.