professor sarah binder with us. a good time to call in with questions. she's here to help answer them. as folks are calling in, democrats promising new legislation to limit president trump when it comes to iran. this was senator tim kaine on the floor yesterday. >> i'll state my conclusion. i believe that the u.s. should not be at war with iran and that another war in the middle east would be catastrophic. i recognize some of my colleagues may have a different point of view. so i speak in the hopes of forging a consensus on one issue. that issue is this -- if there's a war with iran, it should not be initiated by this president or any president acting on his or her own. it should only be initiated by a vote of congress following an open and public debate in full view of the american people. every member of congress should vote and then be accountable for the question of whether another war in the middle east is a good idea. the demand for congressional accountability is constitutionally required. the framework that we have, we pledge to support and defen

host: tim kaine on the floor of the senate, sarah binder, what can democrats do and not do when it comes to limiting the president's warmaking ability. --ability? guest: they could go down a legislative path, or a public path. what senator kaine is doing, and what we will see in the house, is to follow the requirements under the war powers resolution, which lays out a series of steps by which congress could challenge the president's decision to commit troops into hostility. ,hat he is suggesting they do under the war powers resolution, each chamber has to consider what we call a joint resolution of disapproval. which in essence would tell the you have 30 days to keep those troops, and then to bring them back home. the house would have to pass it, the senate would have to pass law,f protected under the it gives some ramp to the senate floor so republicans cannot just block it. there will be votes according to the way that laws works. law works today, is that the president has an opportunity to sign or veto a resolution blocking his waging of war in iran against iran. and then it would be

powers in congress as -- is our topic today, sarah binder is with us from the brookings institution. it's a good time to call in with your questions. she is here to help answer them. for democrats (202) 748-8000, for republicans (202) 748-8001, for independents (202) 748-8002. democrats are promising new legislation to limit president trump specifically when it comes to iran, this is senator tim kaine on the floor yesterday. >> i will state at the -- [video clip] >> i will state my aunt set at the conclusion, the u.s. not be at war with iraq and another war in the middle east would be catastrophic. i recognize that some of my colleagues may have a different point of view. so i speak in the hopes of forging a consensus on at least one issue, that issue is this. if there is to be a war with iran, it should not be initiated by this president, or any president, acting on his or her own. it should only be initiated by vote of congress following an open and public debate in view of the american people. every member of congress should vote, and be accountable for the question of whether ano

. >> sarah binder, government studies senior fellows at brookings institute. brookings.edu. we always appreciate you stopping by. >>> washington journal mugs are available at c-span's new online store. go to c-spanstore.org. check out the washington journal mugs and see all of the c-span products. >>> next, a hearing on the nasa work force, nasa officials and s.t.e.m. education teachers talk about working with universities to help get students ready for jobs in the space industry. >> good afternoon. this hearing is called to order. very pleased to see a hearing on s.t.e.m. and math and science and precision as starting precisely at 2:30 and 0 seconds. that is an auspicious way to begin this discussion. earlier this year on one of the hottest nights of the summer, nearly a half million people crowded on to the national mall. they weren't there for a protest or to celebrate a national holiday, and they weren't there for a concert or to watch a fireworks show. no, instead a half million people went there drenched in sweat to watch the story of the apollo 11 mission as it was pr

. >> professor sarah binder back for a discussion about war powers and congress. professor, president trump said sunday that his tweets should serve as sufficient notice to congress of a possible military strike on iran. where does that obligation come from? >> well, the president is roughlyer