Nick Harper
Donald Trump promises to be a president for all Americans
The polls favoured Hillary Clinton, but the unconventional campaign of Donald Trump has succeeded and has completely upended American politics. Audio
An overview of Hillary Clinton's election campaign
Hillary Clinton has spent almost 25 years at the top level of American politics. Nick Harper looks back on her rocky road. Audio
Clinton, Trump square off in first presidential debate
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
Motive for New York bombing still unclear
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 economic growth plan for US
Donald Trump sets out his vision for economic growth in the US. Audio
Presidential candidates share stage and military plans
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
Hillary Clinton delivers nomination acceptance speech
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
Helen Clark draws on NZ experience in UN debate
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 in Florida today
Barack Obama is in Florida today meeting with survivors of the massacre at Pulse nightclub. Audio
FBI issues plea for help
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
US correspondent on Orlando shootings
Our correspondent in Orlando is Nick Harper. Audio
Orlando death toll could rise with 53 injured
The mass shooting in Orlando has the greatest casualties of any in American history. Correspondent Nick Harper joins Checkpoint. Audio
Patients emotional as funding for new melanoma drug nears
Pharmac announced that it would be funding immunotherapy drug Opdivo from July to treat lung cancer and advanced melanoma. Audio
Cruz drops out of Republican race
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
Clean sweep for Trump in today's primaries
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
Pop singer Prince found dead at his Minnesota home
The US pop legend Prince has been found dead at his Minnesota home. Audio
New York wins boost Trump and Clinton
Hillary Clinton and Donald Trump, have scored big wins in New York. Audio
Polls open in New York primaries
To the US elections now, and voters in New York are casting their ballots in the state's high-stakes primary. Audio
UN Sec-Gen hopefuls face a public grilling
Helen Clark's rivals for the United Nations Secretary-General role have begun their first public pitches for the job. Audio
Battle for democratic nomination gets fractious in US elections
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