“it is up to the duly elected president to decide what constitutes an emergency.”
That makes zero sense. Doing so gives unchecked power to a president. Would you have accepted Biden declaring a female health emergency and legalizing 9th month abortions throughout the states?
that is exactly what Biden and every governor in the US did with covid.
States cannot set trade policy. Tariffs are in the federal wheelhouse. The power resides in the executive. Tariff policy is no threat to the republic.