Look at why blacks didn't assimilate and, for the most part, the same problems don't exist for Hispanics. Hispanic immigration has many things in common with Southern and Eastern European immgration. That blacks generally didn't immigrate on their own and were subjected to another century of legal descrimination created a cultural divide and mistrust that's outlived the racism that spawned it, in part because just as the racism was dying, the War on Poverty shot the black family in the kneecaps and the subset of blacks who were given respect (or fear) gave young blacks a very warped view of how to achieve success.
And to point out a very politically incorrect observation, there is a reason why forms asking for race say, "White (Not Hispanic)" and don't divide Hispanics by race. Many Hispanics consider themselves "white". And that some white people dont is, in many ways, comparable to the white people who didn't originally see Southern Europeans and Eastern Europeans as white and also considered the Catholic Irish a distinct group.