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Nature 445, 134-135 (11 January 2007) | doi:10.1038/445134a; Published online 10 January 2007; Corrected 12 January 2007

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Congress and Bush set to clash on stem cells again

Meredith Wadman

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House and Senate will challenge president's veto.

In a direct but possibly futile challenge to the only veto of George Bush's presidency, the US Congress is expected to pass a bill for a second time that would dramatically expand researchers' access to human embryonic stem-cell lines. As Nature went to press, a vote in the House of Representatives was expected on 11 January, with the Senate likely to act on an identical measure within a few weeks.