Bernie Sanders talks to Katie Couric live

This afternoon at 3 p.m. EDT, Yahoo global news anchor Katie Couric will interview presidential hopeful Senator Bernie Sanders about his bid for the White House, whether he can realistically defeat Hillary Clinton, the midnight expiration of controversial provisions of the Patriot Act and why he may be voting for the USA Freedom Act, which would allow some counterterrorism tools — including the NSA’s controversial bulk data collection — to continue.