next on pbs newshour weekend.ou >> "p newweekend" is made possible by: bernard and irene schwartz. the cheryl and philip milstein family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anderson family fund. rosalind p. walter. barbara hope zuckerberg. corporate funding is provided by mutual of america--

." >> "pbs newshour weekend" is made possible by: pernard and irene schwartz. the cheryl alip milstein family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anderson family fund. rosalind p. walter barbara hope zuckerberg. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we're your retirement company. >> additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs station y from viewers li. thank you. from the tisch wnet studios at lincoln centein new york, ri sreenivasan. >> sreenivasan: good evening and thank you for joining us. we are learning more the conditions president trump is demanding of north koresiahead of a pe face-to-face meeting with kim jong un. on twitter, president trtp pointed ouhat north korea has not conducted a missile test since last november and saysom they, "ed not to do so through our meetings." so far, north koreastate media has not even mentione

. >> "pbs newshour weeken is made possible by: bernard and irene schwartz. ls the cheryl and philip in family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anderson family fund. rosalind p. walter barbara hope zuckerberg. corporate funding is provided by mutual of america-- designing customized individual ro and group retirementcts. that's why we're your retirement company. >> additional support has been provided by: and by the corporation for byblic broadcasting, a contributions to your pbs station from viewers like you. whank you. from the tist studios at lincoln center in new york, megan thompson.d >> thompson: gening and thank you for joining us. up until now, president trump wd his legal team have said they are cooperatih special counsel robert mueller. but now, the president's lawyer and the president himself are rectly attacking mueller investigation into possible russian interference in the 2016 electi. although president trump has a,ng denied his campaign colluded with ruse's refrained from direc

." >> "pbs newshour weekend" is made possible by: bernard and irene schwartz. the cheryl and philip milstein family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundatio the anderson family fund. rosalind p. walter barbara hope zuckerberg. corporate funding is provided mutual of america-- designing customized individual and group retirement products. that's why we're your retirement company. >> additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs yotation from viewers like you. than from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening and thanks for joining us. ida senate today is debating a school safety bill dollowing last month's shooting at marjory stonemalas high school. the bill includes a program to train and arm teachers who opt- in, an idea many gun control advocates oppose. but they are also debating a number of measures opposed by the n.r.a. including an expansion of a three-day waiting peri

. >> "pbs nshour weekend" is made possible by: bernard and irene schwartz. the cheryl and philip milstein family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anderson family fund. rosalind p. walter barbara hope zuckerberg. corporate funding is provided by mutual of america-- designing customizividual and group retirement products. that's why we're your retirement company. >> addi support has been provided by: and by the corporation for public broadcaing, and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, rhariivasan. >> sreenivasan: good evening and thank you for joining us. white house official ptoday defendsident trump's proposed tariffs on steel and aluminum along with the decision not to exempt any cos from the tariffs. that's despite criticism from some of america's closest allies national trade council director peter navarro argued the proposed 25%ariff on steel and 10% tariff on aluminum are necessary to defend nat

next on pbs newshour weekend.ou >> "p newweekend" is made possible by: bernard and irene schwartz. the cheryl and philip milstein family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anderson family fund. rosalind p. walter. barbara hope zuckerberg. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we're your retirement company. >> additional support has been provided by: and by the corporation for gpublic broadcastnd by contributions to your pbs station from viewers like you. thank you. from the tch wnet studios at lincoln center in new york, hari sreenivasan.go >> sreenivasan evening and thank you for joining us. a day after hundreds of thousands of people rallied in supporof gun control, the students leading the "march for our lives" movement are hopingt to turn protto action. some of the students from marjory stoneman douglas high school who addressed the crowdse at rallies yesrday took their message to talk shows today. >> this is led by the youth

." >> "pbs newshour weekend" is made possible by: bernard and irene schwartz. the cheryl and philip milstein family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anderson family fund. salind p. walter barbara hope zuckerberg. corporate funding is provided omy mutual of america-- designing cued individual and group retirement products. that's why we're your retirement company. >> additional support has been provided by: and by the corporation for public broadcasting, and bio contrib to your pbs station from viewers like you. thank you.is from the wnet studios at lincoln center in new york, hari sreenivasan >> sreenivasan: good evening and thank you for joining us. top trump administration ofecials said today that th will be no concessions to north eerea in the lead-up to a potential historicng between president trump and kim jong-un. c.i.a. director mike pompeo outlined four conditions that north korea would need to accept prior to any meeting with president trump. >> he can't conduct nuclear testing. he's go

. >> "pbs newshour weeken is made possible by: bernard and irene schwartz. ls the cheryl and philip in family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anderson family fund. rosalind p. walter barbara hope zuckerberg.

." >> "pbs newshour weekend" is made possible by: bernard d irene schwartz. .the cheryl and philip milstein fami sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anders family fund. rosalind p. walter z barbara hockerberg. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we're your retirement company. >> additial support has been provided by: and by the corporation for b public broadcasting, a contributions to your pbs iewers like you. thank you. from the tisch wnet studios at lincoln center in new york, megan thompson >> thompson: good evening and thank you for joining us. in miami today, rescue workers e working around the clock to reach victims crushed by the pedestrian bdge collapse at orida international university. today, they managed to pull out the first flattened vehicles from underneath tons of concrete. at least six people arenown dead, and authorities say there are no more survivors. it has been exceedingly difficult to reach the victims. >> there is no

." >> "pbs newshour weekend" is made possible by: bernard and irene schwartz. the cheryl and philip milstein family. sue and edgar wachenheim, iii. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. the anderson family fund. salind p. walter barbara hope zuckerberg. corporate funding is provided omy mutual of america-- designing cued indivua