In response to the growing confusion spurred on by the influx of legistlation related to immigration, the Migration Policy Institute has put together a database of legislation from all 50 states.  They state “This database contains all bills and resolutions related to immigrants or immigration that were considered by state legislators across the nation.  At present, the database contains all immigration-related legislation for 2007.  Data for 2008 and historic 2001-2006 data will be added in the coming months.”

You can search by Region or state, Legislative typography, Bill status, Subject of the Legislation,  and Year.  Overall a terrific resource for anyone who deals with immigration law or serves an immigrant population.