The current situation is that most VFR is allowed outside of "extended" class B airspace (i.e. in, below & above class B).
Bit of a bummer for those in the Bay Area...
There are also restrictions on various types of "for hire" operations, including VFR flight training. My guess is that the US Gov are afraid of some nutter looking for their 15 min of fame by going for a trial lesson with a cosh...