WATCH: Full Obama Interview By Charlie Rose WASHINGTON (AP) - President Barack Obama defended top secret National Security Agency spying programs as legal in a lengthy interview Monday, and called them transparent - even though they are authorized in secret. "It is transparent," Obama told PBS's Charlie Rose in an interview to be broadcast Monday. "That's why we set up the FISA court," he added, referring to the secret court set up by the Foreign Intelligence Surveillance Act that authorizes two recently disclosed programs: one that gathers U.S. phone records and another that is designed to track the use of U.S.-based Internet servers by foreigners with possible links to terrorism. He added that he's set up a privacy and civil liberties oversight board to help in the debate over just how far government data gathering should be allowed to go - a discussion that is complicated by the secrecy surrounding the FISA court, with hearings held at undisclosed locations and with only government lawyers present. The orders that result are all highly classified. "We're going to have to find ways where the public has an assurance that there are checks and balances in place ... that their phone calls aren't being listened into; their text messages aren't being monitored, their emails are not being read by some big brother somewhere," Obama said.