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- Sen. Tommy Tuberville has repeatedly said his hold on military promotions isn't affecting readiness.
- Sen. Dan Sullivan, a Marine Corps veteran, said "nobody's buying that."
- Sullivan's comments come after he and other GOP senators tore into Tuberville on the Senate floor.
A GOP senator said on Monday that "nobody's buying" by Sen. Tommy Tuberville's claim that military readiness hasn't been affected by the Alabama senator's hold on promotions.