By Peter Hobson and Tom Polansek CANBERRA/CHICAGO (Reuters) -Australian beef has replaced U.S. supply in China since President Donald Trump returned to the White House, funnelling hundreds of millions of dollars that have in previous years gone to the U.S. cattle industry into Australian pockets. U.S. shipments to China, worth around $120 million a month, collapsed after Beijing in March allowed permits to expire at hundreds of American meat facilities and as Trump unleashed a tit-for-tat tariff war. Ot ...