President Trump’s Nominee for Australian Ambassador, Admiral Harris Talks Tough On China

In my opinion Admiral Harris is a great pick for ambassador to such an important regional security ally as Australia:

US President Donald Trump meets with Admiral Harry B. Harris, Jr. in Hawaii on November 3, 2017

China is seeking to “undermine” the international order in the Asia Pacific, Adm. Harry Harris, US President Donald Trump’s nominee for ambassador to Australia, said in Washington on Wednesday.

Addressing the US Committee on Armed Services on the challenges facing the US military in the region, Adm. Harris, the highest commander of US forces in Asia Pacific region, said the Trump administration must work to counter Beijing’s influence in the region.
“China’s intent is crystal clear. We ignore it at our peril,” he said in public testimony. “I’m concerned China will now work to undermine the international rules-based order.”
Plain-spoken and well-known in the international community for his remarks on US policy in the Asia Pacific, Harris has often provoked a vitriolic reaction from Beijing, in particular for his passionate calls for action in the South China Sea.
His appointment would raise the stakes in the battle for influence in Asia, with experts saying Harris could push the Australian government to tighten military cooperation with its traditional ally.  [CNN]
You can read more at the link, but Australia has very strong economic ties with China with their mining industry exporting massive amounts of resources to the Chinese mainland.  Picking such a high profile US military figure that has been so outspoken about Chinese intentions, is a good counter to any influence the Chinese may try to use on Australia economically.
We have seen in the past how the Chinese used their economic leverage against South Korea in the ongoing THAAD dispute.  If they try the same tactic against Australia, for example in a South China Sea dispute, the US will have a strong voice in Australia to speak out against it.