<referenceContainer name="content">
<block class="Magento\Cms\Block\Block" name="block_identifier" after="product.info.price">
<arguments>
<argument name="block_id" xsi:type="string">usa_delivery_message</argument>
</arguments>
</block>
</referenceContainer>
<move element="block.identifier" destination="product.info.main" after="product.info.price"/>