US Supreme Court Justice, Louis Brandeis, 1932: "It is one of the happy incidents of the federal system that a single courageous State may, if its citizens choose, serve as a laboratory; and try novel social and economic experiments without risk to the rest of the country."
You governors are now seeing, whether you like it or not, a competitive situation developing among the states.
Some states are loosening the COVID restrictions; others are tightening them.