Europe here. It is sad to see the results of the EEUU healthcare system. I still do not get why people do not vote for a more rationale and public service. I guess the EEUU media have brainwashed their people into thinking that a private health system is better. People do not see the problem until it affects them ... until it is too late...
In Mexico that's the US, so maybe the poster is from Spain.
The doubling of the letters (e.g., "EE." for "Estados" and "UU." for "Unidos") follows a convention in Spanish where plural abbreviations are indicated by duplicating the letters. The correct form would be "EE. UU." This practice aligns with historical Latin abbreviations (e.g., "SS." for "Sancti" (plural) or "S." for "Sanctus" (singular)).