Rand Paul floats fetal rights bill

"The Life at Conception Act legislatively declares what most Americans believe and what science has long known — that human life begins at the moment of conception, and therefore is entitled to legal protection from that point forward," Paul said in a statement.

He added that upholding this view is Congress's "constitutional duty."

Critics say the proposed framework is unworkable and would violate abortion rights already declared by the courts.

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