The secret court overseeing government surveillance has ordered the Obama administration to release the 2008 decision authorizing the Internet spying program PRISM. The Internet giant Yahoo had asked the FISA court for permission to disclose PRISM after Edward Snowden revealed its existence last month. Snowden has alleged that PRISM taps directly into the servers of the nation’s Internet giants to collect millions of communications in the United States and abroad. The White House has until late next month to decide which parts of the decision will be published.