Link: http://blogs.wsj.com/law/2011/03/24/obama-doj-loosens-miranda-restrictions-further/?mod=google_news_blog

The rule established in the 1966 Supreme Court case Miranda v. Arizona has never been overturned. In theory, law enforcement still needs to tell every suspect they arrest all that business about the right to remain silent, that anything they say can and will be used against them, yadda yadda yadda. But in reality, for better or worse, the Miranda rule is a shell of its former self. Over the years, courts have consistently chipped away at it, providing exceptions here and there. It seems that police forces these days would practically need a law professor on hand to keep them updated on when it applies.