Arizona's top law enforcement official has acknowledged that Attorney General Eric Holder has a duty to challenge the state's new immigration law if he thinks it's unconstitutional.
Arizona Attorney General Terry Goddard was grilled by a Democratic congressman during a House hearing Thursday about criticism of the Obama administration's challenge of Arizona's new immigration law.
Congressman Al Green of Texas asked Goddard whether Holder is duty-bound to uphold the Constitution and to challenge the law if the thinks it's unconstitutional.
Goddard responded, ``If that's his sincere belief, he has no choice.''

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