i want to make sure i am understanding the point you were making earlier. secretary mattis: i want to say very clearly that the use of chemical weapons, contrary to the geneva convention that syria signed up for, using chemical weapons that syria removed from their arsenal, those chemical weapons that the russian certified were gone -- if they used chemical weapons, they will pay a very stiff price. >> thank you very much ladies and gentlemen. we appreciate your time here. thank you very much. in ♪

announcer: all month, we are featuring our studentcam winners in c-span's documentary contest for high school and middle school students. this year, students told us the most urgent issue for the new president and congress. our second-place winners are students from milan, michigan. milan high school. their documentary on autonomous vehicles is entitled "live and let drive." take a look. ♪ >> there are approximately 16 million auto accidents in the united states every year costing the economy over $250 billion. traffic accidents accounted for

the deaths of over 38,000 u.s. citizens in 2015. this is a problem self-driving cars can fix. 94% of traffic accidents are caused by human error. this explains the push of companies like gm, ford, and mercedes-benz toward owards autonomous vehicle technology. but, how do they work? >> camera, radar, and liday are systems that act as the eyes of the vehicle. they easily identify things like stop light, pedestrians. trouble determining the exact size and shape.

current cost upwards of 70,000 dollars per unit. these three systems give autonomous vehicles an accurate view of the world around them. >> this combines autonomous vehicle technology. >> connected autonomous vehicles are sort of being developed in parallel. a you will start to hear more about the ultimate implementation. >> th ande short range communcication system is the brain. imagine an internet system working with other systems. it receives and fills request. as you add more devices, it becomes increasingly complicated. >> how does it manage all of this data? >> it broadcasts to vehicles in

the immediate area. for example, if my car is breaking rapidly, only vehicles within 200 feet need to know. however, if there is a car blocking the interstate, vehicles as far away as 50 miles need to know. >> this way, only relevant messages will be processed. milan, michigan. the university of michigan has created the autonomous vehicle testing facility. we visited to talk to experts. >> the reaction time is so fast and they are always watching. even if you do hit the pedestrian, maybe you hit them going one mile or two miles an hour. the severity was drastically reduced. >> whenever they see a google car, they try to avoid it. why? because they always drive the speed limit. very smoothly. >> the landscape of driving as we know it can really change through a computerized network. you no longer need to stop at intersections. you can cut your starting and stopping by 70%.

you should get a massive increase in fuel efficiency. >> think of it as bends, which take time away from your day. this is far more efficient. all of these methods are great but people still may be uncomfortable with autonomous vehicles. >> some people feel they are in a death trap. they don't trust this computer to do the driving. for others, i do not think it is that they think there is anything wrong with it, but they really have to give up control. boomers have the muscle cars they grew up with and they tactile feeling of controlling a vehicle. >> and these worries are not unfounded. and there is a new risk, cyber security. >> you did not say the magic word. uh, uh, uh. uh, uh, uh.

>> it is a terrifying experience to have someone take control of this 2-ton computer on wheels. >> this man's experience with hackers is both frightening and foreboding for the future. if hackers can take control of the vehicle, people in cars and in the community are at risk. >> you can bring urban traffic to a halt. you look out and you cannot imagine what is happening because cars are just sort of stopped. >> if you want to make a change of calibration from a different module, you have to have the right code to do it. so if you just looked up by a computer you could not hook into it.

>> if you fake a signal that says i am going 180 miles an hour but other cars are looking at you and say, i do not believe you. this is what you said. this is what you do. right? and you can use those to detect rogue users or fake uses. >> at this point in time we do not have specific regulations. we are leaving that, again, to the regulators and to the private sector. >> i have been in automotive for 23 years. i have never seen automotive years, all of a sudden we have these advanced driving systems and autonomous type vehicles. it is moving so fast, we want to move but we do not want to move so fast that we do not take into consideration safety issues. >> we asked the new president to get involved, saving tens of thousands of american lives.

the speed of integration, it is largely on public opinion. this relaxed regulatory stance encourages innovation, however it will likely turn opinion against the technology and setback large-scale implementation many years. congress, mtsa and the public should work hard to turn that 90% error into 0%. >> dear mr. president, work with congress to prevent 60 million accidents, $250 billion in accidents and over 38,000 deaths every year. announcer: to watch all of the prize-winning documentaries in this year's studentcam competition, visit studentcam.org. ♪ announcer: c-span's washington journal, live every day with news and policy issues that affect you. coming up, staff writer for

foreign policy discusses rex tillerson's trip to moscow and the future of russian relations. whatthey discussion on publicans could face as they attempt to replace and repealed the affordable care act. and editor and publisher of "the priorities in how to achieve them in a gop-controlled government. be sure to watch it c-span's "washington journal," live at 7:00 a.m. wednesday morning. join me discussion. >> air force chief of staff david gives a talk on the air force. beginning at 11:00 a.m. eastern on c-span. the marine corps issued new social media guidelines after explicit pictures of female

service members were posted online without their consent. this is hosted by the american and will be on c-span3. follow these on c-span or or .isten on the c-span radio app >> now, a look at immigration and refugee policy in the u.s.. speakers include an advisor to the -- this was at the new york public library. >> good afternoon everybody. hello. york publiche new library. my name is simon longstaff and i am the director of the