Joseph,
Even if this unsinged letter is authentic, the Moetzes of E”Y can certainly rule for that country but until the Moetzes of America issues a similar letter for this country and they absolutely won’t, it has no bearing on Jews here. I have personally witnessed enough Rabbeim, Rabbonim and even Roshei Yeshiva in the U.S. on smartphones to know that it won’t change anything. And no, I’m not going to encourage your nastiness by naming them.