problem. a series of pro-and anti-immigration rallies around the country yesterday emphasizing the strong feelings over the issue. but a new documentary puts a human face on those who come to the united states. underwater dreams tells the story of four young undocumented immigrants, high school students from arizona, who learned how to build an underwater robot, go up against m.i.t. students, and a national robotics competition. i had no idea who m.i.t. was or who cal-tech was. it s m.i.t. manhattan project. we were just blown away. we thought wow, we re never going to be able to do anything in this competition. when we walked in, we were different. we definitely felt out of place. it was definitely something that stood out there. i had never seen that much white people. nobody was mexican or his tanpa