Nick Harper

Hillary Clinton has spent almost 25 years at the top level of American politics. Nick Harper looks back on her rocky road. Audio

Hillary Clinton and Donald Trump go head-to-head for the first time in a debate that's expected to be watched by millions later today. we cross to Hofstra University, Long Island, New York where the… Audio

New York's Governor and the city's police chief say they still don't know who was behind a bombing in Manhattan yesterday that injured 29 people. Audio

Donald Trump sets out his vision for economic growth in the US. Audio

The two United States presidential candidates, Hillary Clinton and Donald Trump, have laid out their military plans. It's the first time the two have shared the same stage. Audio

Fourth and final day of the National Democratic Convention in Philadelphia. Hillary Clinton has just made her acceptance speech, becoming the first woman to formally accept the Democratic presidential… Audio

We take another, closer look at yesterday's televised debate between candidates for the United Nations' top job, including Helen Clark's performance. Audio

Barack Obama is in Florida today meeting with survivors of the massacre at Pulse nightclub. Audio

The FBI has issued a plea for help from the public as it continues its investigation of the Orlando gay nightclub massacre that claimed 49 lives. Audio

Our correspondent in Orlando is Nick Harper. Audio

The mass shooting in Orlando has the greatest casualties of any in American history. Correspondent Nick Harper joins Checkpoint. Audio

Pharmac announced that it would be funding immunotherapy drug Opdivo from July to treat lung cancer and advanced melanoma. Audio

Republican presidential candidate Ted Cruz has dropped out of the race for the White House, after losing the Indiana primary to Donald Trump. US correspondent Nick Harper joins Checkpoint. Audio

The American presidential hopeful, Donald Trump, has eased to victory in all five of the north-eastern Republican primaries that were up for grabs this afternoon. Audio

The US pop legend Prince has been found dead at his Minnesota home. Audio

Hillary Clinton and Donald Trump, have scored big wins in New York. Audio

To the US elections now, and voters in New York are casting their ballots in the state's high-stakes primary. Audio

Helen Clark's rivals for the United Nations Secretary-General role have begun their first public pitches for the job. Audio

The battle for the Democratic presidential nomination is getting increasingly fractious. Vermont Senator Bernie Sanders won Wyoming yesterday, his seventh victory in the last eight match ups. The… Audio