Nick O'Malley is the United States correspondent for The Sydney Morning Herald and The Age.
Nick O'Malley How did the US government pass a law that banned it from negotiating the price of drugs? The answer is in the corridors of Congress.
Nick O'Malley Scott Walker quits the Republican nomination race with a warning for his rivals: the field needs to thin so Trump can't win.
Nick O'Malley The Wisconsin governor until recently considered a leading contender for the Republican presidential nomination, has reportedly decided to quit the race.
Nick O'Malley Donald Trump fails in response to anti-Muslim comments cast in a question posed to him during a campaign rally in New Hampshire.
Nick O'Malley One of the certainties of American politics was that God – or at least his Catholic representative on Earth, the Pope – was understood to be on the side of Republicans.
Nick O'Malley Time magazine has honoured Democratic maverick by putting his image on its cover.
Nick O'Malley Republican presidential candidates struggle to name an American woman worthy of being represented on US banknote.
Nick O'Malley Autism foundation deplores presidential candidate's remarks despite scientists rejecting any link between autism and vaccinations.
Nick O'Malley It was shamelessly promoted as fight night. There were 11 contenders but only one clear target.
Nick O'Malley Billionaire business mogul and Republican front-runner Donald Trump has not held back in his run for the White House.
Nick O'Malley He thought the project would get him noticed by his teachers. Instead, they had him taken out of school in handcuffs.
Nick O'Malley With Donald Trump a clear leader in the polls, rival GOP presidential candidates are being defined by their attitude to him.
Nick O'Malley The thought that Jeb Bush may be unable to overcome the surge of support Republican outsiders enjoy worries the GOP establishment.
Nick O'Malley Father Terry wanted New Orleans to notice the people buried in the city's murder statistics and names, he realised, added substance to numbers.
Nick O'Malley Property billionaire suggests the Iran nuclear deal is a disaster because he didn't negotiate it.
Nick O'Malley A ban on the use of kangaroo parts in California is set to come back into effect at the end of the year unless it is permanently scrapped. Nick O'Malley reports.
Nick O'Malley The Donald had resisted committing to back the winner of the Republican primaries, but seems to now believe he will win.
Nick O'Malley US animal-protection group is hopping mad at efforts to permanently end a ban on imported kangaroos.
Nick O'Malley Maryland senator's support of the Iran nuclear accord gives US president enough votes to assure the deal's survival.
Nick O'Malley A prominent National Rifle Association advocate's 10-minute video suggests the parents of the reporters killed on air not be "emotional" in calling for gun control.