I was talking more about -Actually if you are talking about the "Irish Catholic lobby" in the US you may need to be here rather than there. The attitudes, knowledge, and understandings of Irish Americans and Irish Nationals don't line up perfectly.
...with the "sentiment filter" of the Atlantic Ocean between them, Irish Americans are likely to want nothing done rather than help the British in IrelandYou propose that the Irish lobby in US would abide because "they ain't Brits"?!??
That stretch of ocean seems very much to accentuate Irish Nationalism's hatred of the British Back on the Oul Sod during WWII the majority of Irish were far more pragmatic - they were busy making money feeding the British, going to work in British factories, watching Irish coastline and reporting to London...and joining the British armed forces 
The more rabid wings of Irish Nationalism at home weren't helped by the fact that De Valera's two arrest waves had incarcerated hundreds of IRA volunteers for the duration of "the Emergency". Whole sections of the movement were missing, and others out of contact with each other...and a pre-war schism and feud inside the organisation hadn't helped either
The idea of the IRA managing to mobilise 5,000 volunteers for Plan Kathleen was completely ludicrous 
They couldn't have mobilised 500...not without getting them out of the Curragh internment camp first!Supporters of Irish Nationalism still outside the internment process were also stifled to an extent; De Valera craftily brought them into the nation defence by creating a two-tier home guard; and the lower tier, that the majority of them were channelled into, wasn't armed with much more than homemade weapons and delineated as a"home guard" by denim overalls. It not only brought them under IDF direction and command...and also prevented them getting their hands on modern(ish!) weapons and training!
