Do you think entire America has newcomers phobia?

I am living in Canada and have lived in usa. when people know that I am a new comer, they just shut down everything. It looks like new comers phobia going on. I even get to fear new people also. It's irony that new comers fear other new comers but it happens. I don't know how to get through this?

Do you think entire America has newcomers phobia?
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