Why a single senator is blocking US military promotions and what it means for the Pentagon

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Alabama Sen. Tommy Tuberville is waging an unprecedented campaign to try to change Pentagon abortion policy by holding up hundreds of military nominations and promotions, forcing less experienced leaders into top jobs and raising concerns at the Pentagon about military readiness.

Senators in both parties — including Republican Leader Mitch McConnell — have pushed back on Tuberville’s blockade, but Tuberville is dug in. He says he won’t drop the holds unless majority Democrats allow a vote on the policy.