Republican presidential front-runner Donald Trump is calling on rival John Kasich to get out of the White House race, arguing that the Ohio governor should not be allowed to collect future delegates because the nomination is already beyond his grasp.

A frustrated Donald Trump stepped up his presidential campaign after a rough week and found himself on the defensive just two days before the closely watched primary in Wisconsin.

The GOP’s leading candidates for the US presidential nomination are the equally despised authoritarian billionaire Donald Trump and religious zealot Ted Cruz, says Bette Browne

Good morning. Here’s everything you need to know before you start your day.

NationBuilder lets politicians use a template for electoral success and find out what voters want, writes Adam Satariano

John Oliver has taken on some of the biggest issues in America with his show Last Week Tonight, and this week he took on Donald Trump and won!

Jeb Bush started his presidential campaign strongly, laughing at Donald Trump’s entry into the race. But he is the latest to fall in the billionaire’s wake, writes Michael C Bender.

Good morning. Here’s everything you need to know before you start your day.

George W Bush never mentioned Donald Trump. But, with his folksy touch, the former US president unleashed a tough takedown of the billionaire businessman who has upended a Republican Party his family has long led.

Former US president George Bush will be campaigning for his younger brother Jeb in South Carolina, marking his most direct entry into the 2016 White House race to date.

It’s show time again. The party machines have revved up. The soundbites have been polished off. The candidates are out on the road pressing the flesh, occasionally taking time out to gaze up admiringly at their images on their posters.

New Hampshire the next stop for candidates seeking delegates’ votes

This US presidential election is seen as one of the most bizarre in modern times, with Republican frontrunner Donald Trump setting the tone. But now Jeb Bush is joining in by questioning another candidate’s height and the boots he wears.

As the US president prepares to make his final State of the Union address, Bette Browne says the widespread optimism that greeted his election has given way to division and acrimony.

Donald Trump has received plenty of free publicity from the media for his 2016 presidential bid, but the Republican frontrunner’s campaign is reportedly about to open the billionaire’s war chest for a major TV ad blitz to bolster his candidacy ahead of the Iowa caucuses.

Amid anti-immigrant rhetoric, it’s worth remembering some of the major candidates vying for the presidency are either the children or spouses of immigrants, writes Bette Browne

US billionaire and major Republican Party donor Sheldon Adelson said he met presidential candidate Donald Trump earlier this week, describing the current front-runner in the race for the Republican nomination as “very charming.”

Terror in Paris and California is stoking the increasingly apocalyptic rhetoric of prospective US presidential candidates ahead of both parties’ debates this week, writes Bette Browne

Republican presidential front-runner Donald Trump likened his proposal to ban Muslims from entering the United States to World War II policies implemented by US president Franklin Roosevelt against people of Japanese, German and Italian descent.

The lawyer for a white Chicago police officer charged in the 2014 murder of a black teenager said yesterday that his client had feared for his life. He also said that dashboard camera footage released by police is unreliable, because video “distorts images”.

Donald Trump has backtracked from his support for a government database to track Muslims in the US — an idea that drew sharp criticism from his Republican presidential rivals and disbelief from legal experts.

USA: Presidential candidate Jeb Bush says he once got an email asking if he would go back in time, if it were possible, and kill the baby Adolf Hitler.

Former US president George HW Bush has criticised one-time defence chief Donald Rumsfeld and former vice president Dick Cheney in a new biography.

Here’s a briefing on some of the stories and issues highlighted on irishexaminer.com today.

The outside political group supporting Jeb Bush’s bid for president with tens of millions of dollars in television advertising is considering placing organising staff in Iowa and New Hampshire, a move that would follow the decision of his formal campaign to refocus its efforts on the two early-voting states.

President Barack Obama has announced plans to keep nearly 10,000 US troops in Afghanistan through most of next year and 5,500 when he leaves office in 2017, casting aside his promise to end the war on his watch and instead ensuring he hands off the conflict to a successor.