warren burger court. what were the dynamics of it? ms. murray: it was a very different chief justice than earl warren, who preceded him. he was a circuit judge appointed to the d.c. courts. it was burger who suggested that harry blackmun be a nominee for the eighth circuit. he was a champion of harry blackmun. i think when blackmun joined the court, burger really expected that he and blackmun would be of a single mind, and indeed, the press thought so too. they called them the minnesota twins. certainly, there are judicial philosophies converged over roe vs. wade, and at the end of their lives, their friendship was really in tatters. the court itself felt the strain of that tension. berger was famously idiosyncratic in terms of his love of celebration and pomp and circumstance. that often wore on certain members of the court. host: so, when the court was prepared to hear this case for the first time, it did not have the full complement of numbers. can you talk about why? mr. forsythe: the court originally took the case is not originally --

bernie sanders, hitting on income clinton said she agrees with warren buffet, who just endorsed her, that the rich need to pay more taxes. ms. clinton: if you make a million dollars, you should have to pay a 30% effective tax rate. the days it have to be over that someone making $1 million or more is paying a lower tax rate than a secretary, nurse, firefighter, teacher. i am going to implement the buffet rule. cynthia: clinton also talked about student debt, health care and how iowa is leading the way , in clean energy. she apparently pressed the democratic national committee to add a presidential debate before next month's new hampshire primary, seeking another high-profile exchange with rival bernie sanders. steve: bill clinton is back in iowa campaigning for his wife. the former president will be in mason city tonight at 6:30. he has appearances tomorrow in waverly, mount vernon, new york city mayor bill de blasio is also set to campaign for hillary clinton here in iowa. the mayor and his wife will spend 4 days in our state. they will return to new york the day after iowa's first-in-the-nation caucuses. de blasio was cli

ms. warren: we have a problem. the presiding officer: the senate is in a quorum call. ms. warren: i ask the quorum call be lifted. the presiding officer: without objection. ms. warren: thank you, madam president. we have a problem -- money. six years ago today, the united states supreme court made the problem worse, a lot worse. thanks to the supreme court, our system of elections is riddled with corruption. money floods our political system. money that lets a handful of billionaires shape who gets into congress and they decide who sits in the white house. and as congress has become more beholden to billionaires and less worried about the american people, just look at what's happened in washington. armies of lawyers and lobbyists flood the hallways of congress and regulatory agencies, urging just a little tilt for every law and every rule since here an exception there and always tilted in favor of the rich and the powerful. corporate executives and government officials spin through the reinvolving door, making sure -- revolving door, making sure that the interests of powerf

ms. warren: mr. president, i ask that the quorum call be lifted. the presiding officer: without objection. ms. warren: mr. president, 30 years ago today, millions of americans gathered around their television sets, in homes and classrooms all across this country to watch the space shuttle challenger launch toward the stars. 73 seconds later, everything changed. we stared at our television sets, stunned and brokenhearted. today on the 30th anniversary of that terrible tragedy, we remember the heroes we lost. francis scobie, michael smith, ronald mcnair, allison anaduka, judith resnick, and we remember one more hero, the special person so many little boys and girls had tuned in that day to see, the very first u.s. civilian in space, christa corrigan mcauliffe. christa attended marion high school in framingham state university. she married her high school sweetheart steve. she had two children, scott and caroline. she eventually became a high school social studies teacher in concord, new hampshire. in 1