Where are they??

A  Russian man arrives in New York  City as a new immigrant to the United States .  He stops the first person he sees walking down the  street  and says,  "Thank you Mr. American for letting me into  this  country, giving me housing,  food stamps, free medical  care, and  a free education!" 

The  passerby  says, "You are mistaken, I am a  Mexican."

The  man goes on and encounters another passerby. "Thank you  for  having such a beautiful country here in America ."

The  person  says, "I not American, I Vietnamese."

The  new arrival walks farther, and the next person  he sees he  stops, shakes his hand, and says, "Thank you for wonderful America !"

That  person  puts up his hand and says, "I am from Middle  East .  I  am not American." 

He  finally sees a  nice lady and asks, "Are you an  American?"

She  says, "No, I am from Africa ..."

Puzzled,  he  asks her, "Where are all the Americans?" 

The African  lady checks her watch and says,  "Probably at  work."