Speaking of an unwillingness to assimilate.....
The ACLU has never assimilated!
I speak Spanish fluently and love the language and culture. However, if you live in an English speaking country, you learn to speak English. If you live in a Spanish speaking country, you should learn Spanish. Many Americans do not do this, suprisingly enough, and there are Americans who have lived in Mexico for years and cannot speak a word of Spanish. That said, they don't get to vote in Mexico, either.
Spanish speaking immigrants want to speak English and get ahead. There are two groups keeping them from doing this: the teachers' unions, which keep pushing "bilingual" (i.e., foreign language only) education because they get higher pay for it; and some Dem-sponsored radical political groups.
One of the problems is that Spanish speakers cannot even get their kids out of these "bilingual" classes. In New York City, the schools were placing kids in these classes who had never spoken Spanish in their lives but happened to have the last name of Garcia or Velez. Would Italian-Americans be forced into bilingual classes because their last name was - well, Giuliani? No.
The problem has to do with the left and not with Hispanics, most of whom have seriously capitalist values (they want to get ahead) and very good family and cultural values. And they WANT to learn English. It's the lefties among them, combined with the educational establishment and the Democrat party, that is preventing this.