For a look at why political progress has not followed military success in Iraq, Gwen Ifill speaks with two experts on the political stalemate in Baghdad. Jeffrey Brown reports the latest on another advance in stem cell research. Spencer Michels presents a science unit report on the search for smarter and easier to use cell phones. The U.S. Supreme Court set the stage Tuesday for a major ruling on gun rights. Judy Woodruff reports on the dangers Chinese workers face when making products that are exported to America. The guests this episode are Feisal Istrabadi, Juan Cole, Ken Miller, Marcia Coyle, Loretta Tofani. Byline: Jim Lehrer, Gwen Ifill, Jeffrey Brown, Spencer Michels, Ray Suarez, Judy Woodruff
