From ncic-metro.org/about.htm: In 2002, as part of the Reward Work Campaign whose goal was to highlight the need for a reform in our immigration laws and support legislation in Congress that would help in this agenda, a group of organizations and local unions in the Washington D.C. area, came together to plan a rally and lobby on October 9, 2002...
That page also lists Juan Carlos Ruiz as their "General Coordinator"
One of their members is Mexicans Without Borders (Virginia organizers say fervor for immigration rallies cools)
The very interesting file ncic-metro.org/Reform.pdf has drawings of friendly, largely Latino "immigrants" being more or less oppressed by drawings of hostile Anglos, including one assumed to be James Sensenbrenner. It also has the rather interesting drawing of "Minutemen" at the link above. Where have you seen drawings like that before?
In that PDF they contrast what they support with HR4437 and with Hagel-Martinez:
...firmly opposes criminalizing undocumented men, women, and children.
...firmly opposes criminalizing people who provide assistance to and family members of undocumented people.
...opposes the Senate Bill because it divides immigrants up by the number of years of residence. We believe that this provision will divide families and will drive people further underground.
...believes that future workers must have full labor protection rights and a path to citizenship.
...believes that holding employers responsible for a broken immigration system is unfair and that worksite enforcement can only go hand-inhand with a legalization
...opposes the fence on the border and believes that this debate is steeped in deep anti-Latino beliefs.
...believes that America should be built on a spirit of diversity and welcoming the stranger. Many of the additional provisions will create a society built on fear of our neighbors and will create a less diverse community.
It also contains this interesting bit:
And you can participate! Every immigrant, even if not yet citizens, knows citizens and can do the important work of educating their citizen friends, family members, and coworkers about this issue. You can take responsibility to get those people to the polls. And, you can register voters at festivals. And, you can take off on election day to be in your neighborhood reminding people that they must vote.
I was unable to find a statement that you had to be a citizen to register voters, but some states (including Texas) require those who register voters to be deputized ( link).