can they do that? I thought federal officials superseded state ones?
Federal law supercedes state law. That doesn’t mean federal officials can go where they want.
IIRC, the issue is that the Voting Rights Act gave DoJ the power to observe elections, but the SCOTUS partially nuked the VRA. So now it’s not clear whether the DoJ still has that power, and the usual suspects are taking advantage of this ambiguity. Possibly hoping to give the SCOTUS a chance to nuke more of the VRA.
Federal law supercedes state law. That doesn’t mean federal officials can go where they want.
IIRC, the issue is that the Voting Rights Act gave DoJ the power to observe elections, but the SCOTUS partially nuked the VRA. So now it’s not clear whether the DoJ still has that power, and the usual suspects are taking advantage of this ambiguity. Possibly hoping to give the SCOTUS a chance to nuke more of the VRA.