security agency's internet surveillance is an effective tool against terrorism. the "privacy and civil liberties oversight board," a group appointed by the president, said the so-called "prism" program, under a provision of the foreign intelligence surveillance act, "section 702," is constitutional. david medine chairs the board. >> overall the board has found that the information the program collects has been valuable and effective in protecting the national security and producing valuable foreign intelligence information. outside of this fundamental core, certain aspects of the section 702 program do raise privacy concerns and push the program close to the line of constitutional reasonableness. >> woodruff: the panel's report on internet surveillance contrasted sharply with its earlier finding on phone data collection. it said that effort lacked a viable legal foundation and should be shut down. the federal department of homeland security is moving to increase security at...

program close to the line of constitutional reasonableness. >> woodruff: the panel's report on internet surveillance contrasted sharply with its earlier finding on phone data collection. it said that effort lacked a viable legal foundation and should be shut down.