The Taoiseach and the US President will meet at a gala dinner in Washington DC this evening.
It's a rare attendance at the Ireland Funds dinner for a US President with Biden expected to address a group of mostly wealthy ex-pats.
Micheál Martin and the President will meet at the function ahead of their formal bilateral at the White House tomorrow.
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The Taoiseach has said one big issue for him is the undocumented Irish:
