If Congress didn't ratify a treaty, but some states want to follow some guidelines that the rest of the country doesn't agree to, that's not secession or treason (assuming the guidelines are themselves constitutional).
Politically the states are going in a different direction from the rest of the country, but it doesn't look like they're breaking any laws.
Someone needs to inform these euroweenies that we already kicked one of their kings out of the country. Why has so much death and destruction come out of Europe ? Over 2,000 years of stupid empire building.