watch senator mie yoor money ku mikulsky's speeches online and searchable at the c-span video library. >>> congratulations to all this year's winners of c-span's "student cam" video documentary competition. a record number of middle and high school students entered a video on the theme "the constitution and you," showing which part of the constitution is important to them and why. watch all the winning videos at our website, studentcam.org, and join us mornings in april as we show the top 27 videos on c-span. and we'll talk with the winners during "washington journal." >>> energy secretary steven chu testified before the senate energy and natural resources committee this week on the agency's loan guarantee program and its recent independent review. he acknowledged that there are improvements to be made and his team is looking carefully into the report's recommendations. he is joined by former assistant treasury secretary for financial stability who headed up the review and issued the final report just last month. this is about 2 1/2 hours. >> okay, why don't we get started? today's he