There have been cases that have gone all the way to the supreme court, including a decision in February of this year: http://www.economist.com/blogs/democracyi

There have been cases that have gone all the way to the supreme court, including a decision in February of this year: http://www.economist.com/blogs/democracyinamerica/2014/02/civil-liberties-and-supreme-court http://www.economist.com/blogs/democracyinamerica/2014/02/ci...