Also, as a person who has experienced xenophobia in over 50 nations I can tell you that it’s never the best and brightest who stayed in their home town and defend it against outsiders via physical violence and harassment. I have a metal plate and five screws in my leg that tell me your proposals are a no go.
Being from Eastern Europe, I can confidently say that being a defeated empire does not prevent idiots from reimagining the past.
Everyone looks at the glory of yesterday, but some are much more obsessed with it. It becomes issue when it leads to contradicting the facts, using it to harm others, and preventing yourself from building a better future.
These are the cultures that do this most. Pointing to a mythologized and stolen past greatness is a coping mechanism for the insecurities of a flagging present.
Surely, you must be aware that this thing called 'Make America Great Again' is a backwards-looking 'movement' that has half the country (and a third of the lefty towns) in its thrall. (Just don't ask them to say what 'Great' is out loud, you're not going to get an answer appropriate for polite company.)
And even besides it, the US is highly backwards-looking. At its best, it's political culture is ossified and enslaved to the predominant opinions of a small group of people who are two centuries dead. (While being oblivious to the fact that within that group, there was a huge spectrum of disagreement on these fundamental questions!)
Pile on a bunch of American Exceptionalism, and you get a perfect thought-terminating cocktail of 'It is this way because it's always been this way and because we are the greatest country in the world.'
That every country has its share of people who engage in such backward-looking, glorifying-the-past behavior does not make it right.