Taoiseach Enda Kenny has met with senior executives of technology companies in Silicon Valley as part of a tour of the US west coast.
He was also due to visit Los Angeles and Seattle, as part of the St Patrick's Day celebrations.
Mr Kenny also met with film director Steven Spielberg in LA, where he was expected to discuss the prospect of using Ireland as a location for more films.
Meanwhile, US Vice President Joe Biden has confirmed his intention to visit Ireland later this year after meeting Mr Kenny in Washington.
No date has been announced for the visit.
Mr Kenny announced the creation of around 260 jobs in Ireland during his California visit.
The IDA supported jobs will be at the Irish operations of technology companies Yahoo and McAfee.