Are you aware that Obama gave his blessing to nullification?

Obama changed his stance on the federal Defense of Marriage Act and directs the justice dept to stop defending the law in court.

Several states have passed same-sex marriage or civil union laws in direct defiance of the federal law...effectively enacting nullification...and Obama bowed to the pressure, thereby effectively embracing the states rights in issues outside of the powers of the federal government.

So, after DOMA and Obamacare, which unconstitutional laws do you think that we should nullify next?