WASHINGTON — President Bush said Saturday he personally has authorized a secret eavesdropping program in the U.S. more than 30 times since the Sept. 11 attacks and he lashed out at those involved in publicly revealing the program. "This is a highly classified program that is crucial to our national security," he said in a radio address delivered live from the White House's Roosevelt Room. "This authorization is a vital tool in our war against the terrorists. It is critical to saving American lives. The American people expect me to do everything in my power, under our laws and Constitution,...