A bill passed by the Texas state Senate, SB 9, requires all Texas communities to join the Department of Homeland Security's program entitled Secure Communities. Secure Communities allows local law enforcement agencies to compare the fingerprints of arrested individuals with DHS data to determine if the individual is in the country illegally.
SB 9 also has other provisions, including requiring proof of citizenship when obtaining a driver's license of state issued ID.
The state legislature is still considering a mandatory E-Verify bill.
For more information, see The Texas Tribune.