You’re gonna have to.
Not only is it not our responsibility, we can’t help. Believe me, us sanctioning the US will only turn your government against us. All we can do is what we are…ride it out, be as friendly as we can (the reason Australia goes above and beyond is because of who we are and a little debt from WW2 but the citizenry’s patience is being tested) and try not to poke the bear too much.
But it’s your job and your responsibility, not ours. We were told to mind our own business for years when we warned US citizens this was coming during the Obama tenure, when Ryan and Gingrich started their obstructionist crap.
The sooner you all get together on a peaceful shutdown the better off you’ll be.