[mc32]

And Mexican is the demonym for people from... The United States of Mexico.

Likewise, a New Yorker can be someone from the state of New York, or someone from the City of New York.

Besides. Geologically/geographically there isn't one huge American Continent. There are two land masses. The North American continent in which North Americans live and the South American continent where South Americans live.

In that respect it's like the Eurasian continent. No one from the European and Asian continents call themselves Eurasian. There is a term 'Eurasian' but that's for people of mixed heritage.

Basically, the parent poster is tilting at windmills.