Australia as a 5[1-?]th U.S. State?

One for the “faintly insane” file:

I just received a letter of demand of information from my bank starting out with the line:

“With recent changes to Australian legislation, we need to confirm if you’re a U.S. citizen or resident for tax purposes…”

(No I am not; and the A.T.O. surely knows this already.)

(Minimal) sarcasm intended: does PPau have a stated position regarding whose coat-strings Oz should be beholden to; and maybe which countries have automatic rights to dictate meta-policies (to all of us)?

Or is this simply one of the FTA provisions finally surfacing like a breaching whale/iceberg? [Suitable apologies for bad metaphor usage.]