He's taken on global warming and the sorry state of public education. Next up is a broken immigration system.
“An Inconvenient Truth” and “Waiting for ‘Superman’ ” filmmaker Davis Guggenheim wants to convince America that young immigrants who came to the U.S. illegally — or overstayed visas — as kids should be able to become citizens.
“To be part of this movement right now and to help get this done is a personal satisfaction for me,” said Guggenheim. “I believe that a documentary can really do a lot to change things.”