President Joe Biden arrived for his meeting with the Irish President in Dublin for the start of a day of official business, and brought his son Hunter and sister Valerie once again for the ride.

After spending time with his Irish relatives a day earlier, Biden was due to spend the day in the Irish capital. The schedule included meeting the prime minister and making a speech to parliament.

He signed his host's guest book with an Irish proverb, 'Your feet will bring you to where your heart is,' and joked that he never wanted to go home.

Officials say Biden is having the time of his life reconnecting with his Irish heritage.

But they also had to play clean-up on Biden's gaffe when he muddled the Black and Tans, a British force that brutally put down Irish insurgents in the 1920s, with the New Zealand All Blacks rugby team.

It almost threatened to overshadow his work in Belfast earlier, when he managed to carefully walk a tightrope of sectarian sensitivity with a well-received speech.

In Dublin, a day later he arrived at the president's residence for a formal welcome.

Hunter, 53, arrived first, hand-in-hand with his aunt Valerie, 77.

Then the Beast pulled up. Biden was greeted by Irish President Michael Higgins before heading inside to sign the visitor book.