Wouldn't it be better to remember what the US was before?
Read Thomas Paine common sense -> Declaration of Independence -> US Constitution(Constitutional Representative Republic) -> Bill of Rights.
In that order to understand what Americanism is.
Americanism simplified: When the individual does what is best for himself and his community, everyone benefits, including the individual. You can't put the individual first or the community first, because they are one, they are "the people."