U.S. President Donald Trump says he is working on a retirement savings plan modelled on Australia’s compulsory superannuation system. During an Oval Office signing ceremony on April 30, Trump’s top economic adviser Kevin Hassett pointed to Australia’s model. “So the basic headline is if you look at the huge success of Australia, and their retirement savings accounts, that we’re working with the Treasury secretary—he and I, and Jason Smith and other members of Congress to come up with something that’s pretty close or in the direction of the Australian system.” Hassett said in the Oval Office....