Are budget cuts, Obamacare confusion causing IRS bottleneck?

Clip: 4/13/2015 | 8m 49s | Judy Woodruff interviews Commissioner John Koskinen about these problems. (8m 49s)

Iraqi PM to appeal to U.S. for more firepower and support

Clip: 4/13/2015 | 5m 20s | Special correspondent Jane Arraf, reporting from Baghdad, joins Gwen Ifill. (5m 20s)

Is Jordan Spieth’s Masters win the start of a great rivalry?

Clip: 4/13/2015 | 5m 46s | We look at Spieth’s career and accomplishment with John Feinstein of The Washington Post. (5m 46s)

Jonathan B. Tucker recites his poem 'Live United'

Clip: 4/13/2015 | 2m 38s | Watch Jonathan B. Tucker recite his poem "Live United." (2m 38s)

This cement alternative absorbs carbon dioxide like a sponge

Clip: 4/13/2015 | 7m 25s | Cement's production comes with a huge carbon footprint. (7m 25s)

Why Clinton’s campaign wants us to think we don’t know her

Clip: 4/13/2015 | 8m 21s | Gwen Ifill talks to Amy Walter of the Cook Political Report and Tamara Keith of NPR. (8m 21s)