The former South Carolina governor and former ambassador to the UN had teased the launch of a White House bid for several weeks, but made the news official in a video released by her campaign.
She and Mr Trump are now the only two declared presidential candidates running in the 2024 election.
In that video, first reported by Axios, Ms Haley references her upbringing as an Indian-American in a town beset by de facto racial segregation. She also describes herself as a "proud daughter of Indian immigrants", who was "different" because she was neither Black nor white.
"My mom would always say, your job is not to focus on the differences but the similarities. My parents reminded me and my siblings every day how blessed we were to live in America," she says, before pivoting to an oft-repeated Republican trope that suggests that "some" - meaning Democrats - see the US as a flawed, fundamentally racist nation.
This story is from the {{IssueName}} edition of {{MagazineName}}.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the {{IssueName}} edition of {{MagazineName}}.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
Relax Kemi, history's on your side in the battle with Farage
Conservative MPs are worried. They weren’t worried when Andrea Jenkyns, formerly one of their number, defected to Nigel Farage’s Reform UK party.
Unlike Starmer, Farage's charisma lights up the room
The extraordinary poll showing Reform UK has overtaken the Labour Party in popularity can be attributed to many factors.
Okolie follows in footsteps of giants with weight switch
Lawrence Okolie is a big lad, and he has always been a big lad.
Year of living dangerously: our season awards for 2024
Kieran Jackson on best driver, biggest shock and much more
Injury-plagued City cannot afford to slip up in Turin
Manchester City's manager had his head in his hands.
Liverpool's imperfect win maintains perfect campaign
The mathematics of a complicated competition may remain unclear but one element is apparent.
Thames Water's operation is simply not good enough
Deeply in debt and proposing huge price hikes, the troubled company is holding customers to ransom
Murdoch loses court case in real-life 'Succession' battle
Rupert Murdoch's attempt to give his eldest son control of his family media empire has been blocked by a US court after a lengthy legal battle with three of his other children.
Netanyahu takes witness stand in corruption trial
Benjamin Netanyahu has become Israel’s first sitting prime minister to testify as a criminal defendant – having taken the witness stand in his lengthy corruption trial.
US shooting suspect shouts as he's dragged into court
Mangione: 'It's an insult to the intelligence of Americans'
