“but they could just as well charge obstruction of justice or impeding a federal official”
https://www.justice.gov/usam/criminal-resource-manual-923-18-usc-371-conspiracy-defraud-us
Conspiracy to defraud the United States.
Open and shut.
Arrest every state legislator that voted yes, along with the Governor and State AG.
Order the state police and the leading police officer in every jurisdiction to comply. Arrest those that do not.
Prosecute all offenders.
And STOP any and ALL federal funds going to the traitorous state, city, municipality, etc. They become no better than Pakistan by lying, cheating, subverting, etc., this country and it’s citizens.