Its basically confirmed Minnesota sent billions of dollars to Al Shabab over the years. The question now is how complicit Walz amd Frey were in the Somali scheme. Encouraging their citizens to impede federal law enforcement is window dressing at this point. If the Justice Department can link the funding of foreign terrorist organizations to a deliberate policy of preventing the Federal Government to stamp it out, that would be more then enough to bring Seditious Conspiracy charges.
I would imagine the Lieutenant Governor and State Attorney General may also be in the cross hairs. If the Feds do intend to arrest the entire executive leadership of a State, they probably would want to be backed up by the Army. Desperate men like Walz may do something foolish.