He was the Nine Network's correspondent in New York when the Twin Towers were attacked in September 2001, and less than two years later was in Iraq, travelling north from Kuwait to reach Baghdad the day after the Coalition seized the city.
[citation needed] In 2001, Usher moved to the Nine Network's US bureau, where he worked for three years as National Nine News US correspondent, based in Los Angeles.
Usher returned to Australia to fill in as host of Today, then at the beginning of 2004, together with wife Anna and young son, he moved to the UK, to cover the London bureau.
[citation needed] Also from 2009, Usher finished his role as presenter of the Sunday Morning News, as the bulletin was replaced by Weekend Today.
[citation needed] In October 2016, Usher joined the Seven Network and replaced Melissa Doyle as weekend presenter on Seven News Sydney.