In Australia it was all going well then there was a large breakout in Melbourne, in the State of Victoria. Our States cover very large areas here, and our constitution specifies open borders. That was recently tested in the High Court of Australia, which is the ultimate court against a suit brought by mining magnate and all around fat wheezing greedy pig Clive Palmer, and the High Court not only reaffirmed the right of the States to close their borders if they deem that necessary in this circumstance, but they also ordered Palmer to pay ALL the costs of ALL the States who joined the suit.
So Melbourne went into a second lockdown that was very severe and there were some very angry protests, but the upshot was the outbreak was quickly snuffed out.
So there are lessons to be learned if the US wants to learn those lessons and has the political will to use the power of the national guard and/or military to enforce their rules rather than use this power to stop a peaceful protest.
More on Clive Palmer if anyone is interested...