Sorry, I just saw your question. I haven't been on-line for a while.
I haven't had a problem with law enforcement. I have taken photos there for about an hour on two separate occasions. It is not posted (No Parking/Stopping/Standing) so I took my chances. I had one police officer pass by and he just waved. But I have received feedback that any other place then the fenced in observation area and they have been asked to move.
However, I strongly advise to follow any orders to move without incident.