judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening and thanks for joining us. the presidential nomination campaign that began last february in iowa is nearing the finish line and chicialt is coming closer to clinching the democratic nomination that would find her facing reebility evere republican drumplet in the fall. she won all the caucus ever virgin islands and puerto rico, she could conceivably have enough to clinch the nominati

judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening, and thanks for joining us. muhammad ali called himself "the greatest," and most everyone agreed. the boxer dazzled in the ring, winning olympic gold and the heavyweight title three times, and dominated his sport for two decades. outside the ring, ali was a charismatic personality, a civil rights pioneer, a fighter for his muslim faith, and an anti- war protester later embraced by p

judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening, and thanks for joining us. today in orlando, at churches and in memorial services, a city marked one week since a self- radicalized isis sympathizer named omar mateen shot and killed 49 people with a semi- automatic rifle at a gay nightclub. tomorrow in washington, the u.s. senate is scheduled to vote on gun control measures intended to lessen the odds of such a massacre happening

judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, megan thompson. >> thompson: good evening and thanks for joining us. britain says it will set its own timetable for leaving the european union. following thursday's referendum, where a majority of british voters sided with exiting the 28-nation bloc, today britain's foreign secretary said the timing of the split is entirely for the u.k. to determine. meanwhile, an online petition to the british parliament calling for a re-vote h

judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, alison stewart. >> stewart: good evening, and thanks for joining us. great britain is now grappling with the consequences of its vote to exit the european union. trade, immigration and security agreements are all up in the air, and today e.u. officials began meeting on how to handle the departure and figure out how imminent it wille. today was also a day of reckoning with a new reality for a nation of 65 million people, includin

judy and josh weston. the cheryl and philip milstein family. the citi foundation. and enabling urban progress. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires.