No US president, regardless of party, has ever recognized the constitutionality of the War Powers Act. When a president sends reports to Congress of the sort the act mandates, the report typically includes a disclaimer stating as much.
>If US economy crashes
Any European attempt to "crash" the US economy would result in worse results for Europe.
Only 7% of US GDP comes from foreign trade, by far the smallest of any developed nation. The US is Denmark's largest export customer, while Denmark is almost insignificant as a US customer.
Example: One often-suggested penalty against the US is Novo Nordisk suspending sales to Americans. Even setting aside the fact that the US's Lilly's own GLP-1 has handily commercially outperformed Ozempic (as seen in their relative stock prices), the US was *57%* of Novo Nordisk's sales in 2024. <https://www.novonordisk.com/content/dam/nncorp/global/en/inv...>