. >> woodruff: we talk with marcia coyle about today's arguments at the supreme court on whether multinational corporations can be held responsible for human rights violations. >> ifill: and jeffrey brown talks with jason moran, the pianist, composer, and new musical adviser for jazz at the kennedy center for the performing arts washington. >> improvisation of music and jazz kind of forces us to focus. it forces us to have an imagination.

. >> woodruff: we talk with marcia coyle about today's arguments at the supreme court on whether multinational corporations can be held responsible for human rights violations. >> ifill: and jeffrey brown talks with jason moran, the pianist, composer, and new musical adviser for jazz at the kennedy center for the performing arts washington. >> improvisation of music and jazz kind of forces us to focus. it forces us to have an imagination. >> woodruff: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: moving our economy for 160 years. bnsf, the engine that connects us. and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. and with the ongoing support of these institutions and foundations. and... this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: this was primary day in arizona and michigan, with 59 republican delegates at stake. mitt romney and ric

for more on both cases, we are joined by marcia coyle of the "national law journal." >> let's do thearez case, the stolen valor act. give us a little context here. when is lying a crime and had is lying protected speech? >> well, lies are speech, the first amendment protects speech, but it doesn't plectall lies. for example, perjury, fraud, those are crimes. the first amendment doesn't protect defamation and libel. there are some exceptions but it doesn't protect them. but in all cases in which the first amendment doesn't protect a lie, it's because there's been a requirement that there be an swent to do harmo harm has occurred. that brings us to the problem with the stolen valor act. >> warner: tell us how it unfolded today. the government would have been gone first here. >> the federal law does not have a requirement of harm. so the arguments here focus really on two issues-- the justices were very focused on one-- what harm is there from someone lying about having gotten a medal? and, two, if the government can make this type of lie a crime, where does the government's police powe