In the waning hours of the Obama administration, the head of the U.S. Fish and Wildlife Service set in motion a plan to prohibit lead ammunition and fishing tackle from national wildlife refuges by 2022.

The Jan. 19 order, intended to protect birds from lead poisoning, presents the Trump Administration with an early opportunity to weigh in on gun policy. Gun-rights supporters have condemned the plan as a nakedly political act unsupported by science.

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