Published: Apr 27, 2010 11:28 AM EDT

      WASHINGTON (AP) - Senators are expected to question Homeland
Security Secretary Janet Napolitano about the ramifications of
Arizona's tough new immigration law when she appears for an
oversight hearing.
      The Senate Judiciary Committee already had planned the hearing
for the Homeland Security Department. Last week Arizona's governor
signed a law requiring police to question people about their
immigrant status if they suspect they are in the U.S. illegally.
      Napolitano's department oversees border security.
      President Barack Obama has called the new law "misguided."
      Arizona officials say the law is necessary because the federal
government has failed to stop the steady stream of illegal
immigrants.