. >> russell berman and susan, thank you for being on "newsmakers" this week. [captioning performed by national captioning institute] [captions copyright national cable satellite corp. 2012] >> i am appearing here today as one spokesperson for the hundreds of thousands of marines, sailors, their families, and loyal civilian employees who are on knowingly exposed to toxins, through their drinking water at camp lejeune, north carolina. >> the documentary "semper fi" looks at the efforts of jerry ensminger, and he is joined by rachel libert tonight. >> they have of ski faded -- they have aussie faded -- change this, so now if they were to sit down with me face to face, i could assure them with their own documents and counter what they have been saying, and they do not want to do that. >> more withry ensminger and "q&a."libert on c-span's >> we asked students what part of the constitution was the most important to them. today, we are speaking to an eighth grader. good morning, wilson ekern. you were looking at the right to bear arms. how did you choose this >> it w