Politico writes about this, citing sources.

“US officials told Kyiv representatives that they did not have extra ATACMS ... The transfer of ATACMS ... will lead to the depletion of American stocks and will damage the readiness of the US Armed Forces for a future battle,” the material says.

Earlier, former US Secretary of Defense Mark Esper said that the United States was delayed in delivering Patriot missile defense systems to Ukraine.

Former Pentagon adviser Colonel Douglas McGregor said that the resources of the United States and its partners, which supply Ukraine with ammunition, are rapidly declining.