"There's this widespread view that the RBA can't move before the Fed, but the reality is they've done it many times.The issue's what it might do to the A currency," says CBA's chief economist, Michael Blythe. Photo: Lisa Maree Williams Turmoil in global markets has pushed out expectations for the first interest rate rise from the US Federal Reserve, threatening to hold up the Australian dollar and frustrate the Reserve Bank of Australia's hopes to start "normalising" its record low rates.