The Economist has a succinct round-up of the national politics of immigration reform:
Now Washington may try again. With a wretched economy and long to-do list, it hardly seems an opportune moment. Yet on April 14th America’s two biggest unions, including one that helped block reform in 2007, unveiled a plan to push it forward. Luis Gutierrez, a congressman from Chicago, has visited 17 cities to build momentum for reform. A coalition of advocacy groups is planning an $18m campaign to make immigration a priority. Several big cities will hold rallies on May 1st.