JOE Biden quoted poet Seamus Heaney in his acceptance speech for the Democratic presidential nomination.
It is the second time this year the former US vice president has used a verse from The Cure at Troy by the Co Derry-born Nobel Laureate.
The line "This is our moment to make hope and history rhyme" has often been quoted by politicians.
Tony Blair, Mo Mowlam and Bertie Ahern are all thought to have cited the verse at one time or another.
Former US President Bill Clinton has also told how Heaney, who died in 2013 aged 74, handwrote the lines for him.
He later hung them on the wall of his study in the White House.
Biden, who visited Ireland in 2016, has previously spoken proudly of his Irish ancestry.
In April last year, he told how his maternal great grandmother, Geraldine Finnegan, was a "proud descendant of the Finnegans of Ireland’s County Louth".
"The great-grandson of a man named Edward Francis Blewitt, whose roots stem from Ballina, a small town in Ireland’s County Mayo – sister city to my hometown in Scranton, Pennsylvania – an engineer with a poet’s heart," he added.
In his acceptance speech on Thursday night, the presidential candidate said he hoped Americans would send him to the White House to replace Donald Trump.
At the close of his speech, he said: “The Irish poet Seamus Heaney once wrote: ‘History says / Don’t hope on this side of the grave / But then, once in a lifetime / The longed-for tidal wave / Of justice can rise up /And hope and history rhyme.’
“This is our moment to make hope and history rhyme.”
The former vice president also quoted the Bellaghy bard in March.
"I thought of a quote, some of you heard me quote many times, a fellow I admire very much who passed away not long ago, a poet named Seamus Heaney – he wrote a poem called the Cure at Troy," he said before quoting the verse.
