Possibly- Could be considered biological warfare, with all that entails. That puts anyone responsible for gain of function research (meaning: can we cause a virus to cross species or do something it couldn't naturally) in the cross-fire. Technically, however, since Congress is responsible to declare wars against nations, it does not. A President can boycott trade, declare embargos, limit travel to and from, because these are not considered to be open acts of war. Blockades, bombings and other open acts of warfare are unavailable Constitutionally without a declaration of war by Congress.
So question - since Trump declared war on the virus (in a certain way) does that count?
Possibly- Could be considered biological warfare, with all that entails. That puts anyone responsible for gain of function research (meaning: can we cause a virus to cross species or do something it couldn't naturally) in the cross-fire. Technically, however, since Congress is responsible to declare wars against nations, it does not. A President can boycott trade, declare embargos, limit travel to and from, because these are not considered to be open acts of war. Blockades, bombings and other open acts of warfare are unavailable Constitutionally without a declaration of war by Congress.