The larger the Hispanic vote becomes, the less seriously are the restrictive features of the immigration bill likely to be enforced.
The growth of the illegal population is irreversible but the means of controlling the growth of illegals are quite reversible, both de facto through the watering down of the enforcement of "tough" requirements and de jure through later repeals of requirements deemed too "tough."
One of the remarkable aspects of the proposed immigration "reform" is its provisions for cracking down on employers who hire illegal immigrants. Employers are to be punished for not detecting and excluding illegal immigrants, when the government itself is derelict in doing so.
Employers not only lack expertise in law enforcement, they can be sued for "discrimination" by any of the armies of lawyers who make such lawsuits their lucrative specialty.
But no penalties are likely to be enforced against state and local politicians who openly declare "sanctuary" for illegal immigrants. Officials sworn to uphold the law instead forbid the police to report the illegal status of immigrants to federal officials when these illegals are arrested for other crimes.
This is perfectly consistent for a bill that seeks above all to solve politicians' problems, not the country's.