My daughter got married Mar 2008. Her husband just received his permanent residency. Will this affect his immigration status? What are her rights?

If your daughter's husband just received his "green card" after their marriage and your daughter is a US citizen, it will facilitate both his renewal of residency and/or his ability to become a US citizen based upon length of time married to a US citizen.  Your daughter's rights would be the same as any other married individual and would not be affected by his immigration status.  If you have further questions, you should contact a Family Law or Immigration attorney in your area. -Alfred Polizzotto, III