So typical of Democratic administrations and the Obama administration, in particular.
This is the exact same situation that we see with marijuana, fire arms, and here, obviously, illegal immigration. This administration rules by executive order and fiat and simply ignores federal laws that it finds politically inconvenient or that don't fit its political or "progressive" agenda.
You don't like the law but you can't muster the political wherewithal to get it changed in congress, why then, simply ignore it. You want to emphasize and heighten some criminal aspect, then ignore that law and demand even more laws. You want to cater to some special interest and give them protections that no one else gets... ignore the law.