Embryonic stem cell research is legal in America and nothing in the administration's current policy affects that legality 400 lines are currently being used to conduct embryonic stem cell research both in the private sector and by the Federal Government.
So my own suspicion is that the attorney has stopped this prosecution because part of her defence was to question legality and that would have brought his advice into the public domain again and there was something fishy about the way in which he said war was legal.
Hitler never abandoned the cloak of legality he recognized the enormous psychological value of having the law on his side. Instead he turned the law inside out and made illegality legal.
I am a passionate believer in freedom of speech. I would not support anything which would impinge on aggressive robust freedom of the British press but when things go wrong and there has been outright illegality there should be proper accountability.