> He was a primary architect of the 1996 Mitchell Principles and the 1998 Good Friday Agreement in Northern Ireland, and was the main investigator in two "Mitchell Reports", one on the Arab–Israeli conflict (2001) and one on the use of performance-enhancing drugs in baseball (2007).
Yes, I know, my instinct is also to say it's none of their business. But in the case of the GFA, it is.
Also, many US Catholics, more generally, have historically, and I suspect that the way the politics of religious identity have evolved recently, that might be even more true than when the Troubles were last active if they became so again.
https://www.rte.ie/history/de-valera-in-america/2020/0218/11...
It isn't a coincidence that ireland won its independence as irish americans became major players in politics, business, etc.
The US didn't randomly, or even out of generic nosiness/imperialism, become a guarantor of the GFA; the Troubles were a focus of intensive and intensely divisive interest in the US.
The underlying forces in the US that made that true haven't gone away.
For background, see https://www.politico.eu/article/on-brexit-boris-johnson-is-n....