Progressive Dishonesty About Supremacy of Federal Law

Behind the sanctuary city idea is the notion that cities and counties can ignore federal law, like this 1/24/17 story about Texas Gov. Abbott threatening to cut off state funding to Austin's sheriff because she refuses to inform ICE that they are releasing illegals from jail.  Now, if a Republican invoked states' rights to refuse to follow Supreme Court rulings on gay marriage or transgendered bathrooms, the left would suddenly remember Art. VI, sec. 2:

2: This Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all Treaties made, or which shall be made, under the Authority of the United States, shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby, any Thing in the Constitution or Laws of any State to the Contrary notwithstanding.

Now Trump is telling these locality rights governments, federal law is supreme.