So Miller is blaming CBP (they “may not have been following […] protocol”, "The initial [lying] statement from DHS was based on reports from CBP on the ground.”)

Noem is blaming the White House (“Trump had been privately defending [the killer]”, “Noem was given guidance from multiple White House officials on how she should talk about the shooting”).

And trump is distancing himself from both of them, as well as Bovino.