Most are --- the use of two last names is a very good indicator someone isn't 6th generation American ---plus the types of first names. It's usually very obvious here in this very hispanic region. Plus check how many are believed to have fled back to Mexico ---and the number and type of aliases used.
Thanx for the response. It isn't obvious to me but Wisconsin is hardly a hotbed of Latino immigration so I'll take your word for it, with a small grain of salt, unless some other information makes it my way.
I learn something new everyday.