I agree, but I’m clarifying the facts: they’re claiming an administrative warrant gives them authority to enter a house, not no warrant as OP stated.

Great, since we are all in agreement, let's see if we can put it clear terms.

Administrative warrants are civil in nature and do not give authority to enter a house or any private space. Using them as such is in violation of the fourth amendment.

An administrative warrant is just an email from their boss telling them to do it. It's not a real thing