To the best of my knowledge - and that deserves a disclaimer, since I'm a grad student in science and not yet completely versed in the legal gymnastics - it is changing, but any loosening of policy restrictions only comes with exceptional evidence that current norms are grossly unnecessary. In a general sense, bioengineering and tech started out immersed in a climate of fear and overblown, Crighton-esque 'what-if' scenarios with little or no basis in fact, and that climate is slowly receding to more informed levels of caution.

Policy also assuredly changes in the other direction as new frontiers are reached, to account for increased abilities of researchers to manipulate these systems.