The true axiom: supply equals demand.
The 10th Amendment gives the State the power to do as they wish but…
So long as they don’t request or accept Federal cash and-or resources with strings attached.
Both the POTUS and Congress can insist such states to conform to executive/congressional will.
For example, President Dwight Eisenhower signed into law the Federal Aid Highway Act of 1956 (also short titled the National Interstate and Defense Highways Act).
At the time, it was the largest amount of money given towards “infrastructure”, a word often cited by President Trump during this health crisis.
This act explicitly authorized appropriations for continuing the construction of highways;
to amend the Internal Revenue Code of 1954 to provide additional revenue from taxes on motor fuel, tire, and trucks and buses; and for the other purposes.
The term “ defense ” was included to also divert costs from defense funds. In addition, it provided access to the US militia to defend itself during conventional or nuclear war.
Back them, each state you wanted funds also had to kick in 10% of their own cash.
Perhaps when the POTUS (and Congress) talk about coordinating a unified approach to re-opening the economy it will be one through something like a new highway act?