Across the networks of nbc news, thanks for staying up late with me. Ill see you at the end of tomorrow. Welcome to the beat. Im ari melber. Todays the day. Actress Stormy Daniels taking the stand against defendant trump for the first time. His defense argues she is lying. So prosecutors had an important goal here today. Showing the jury that she is believable. That she is telling the truth. That the facts are on her side. And while defendant trump is not on trial for lying about the underlying encounter, that would not be a crime. They want to use the da, this testimony, to show that this was part of the first of many lies by trump. Some of which prosecutors argue are crimes. This is daniels First Time Ever under oath. And her chance to be heard in a Legal Process that spanned years and involved many claims about her at the center of this scandal. Donald trumps personal attorney paid a porn star named Stormy Daniels to keep quiet about her alleged relationship with republican candidat