I'm from the US:
Nah, Red White and Green is Italian. Every shitty deli and pizza place in Charleston puts some Italian flag sticker on their window. So I associate the Italian flag with soggy sandwiches.
Though I really don't encounter the Irish flag much, so I don't recognize it. I just don't look at flags, so only know a few (I could recognize the US flag, the Italian flag, the Canadian flag, and the Japanese flag. That's it).
If anything in America wants to look Irish, they just bathe it in green, clovers, and Boston Red Sox crap. So as a Yankees fan, I have associated Irish-ness with the Sox and am automatically apprehensive. Anyway, I never see the Irish flag, but I wouldn't confuse it with the Italian one.