The CDC has rescinded the order requiring negative COVID-19 test results for international air travel into the United States.
More information can be found in their announcement here
https://www.cdc.gov/media/releases/2022/s0610-COVID-19-test.html
As of July 18, 2022, CDC’s COVID-19 Program for Cruise Ships is no longer in effect.
https://www.cdc.gov/coronavirus/2019-ncov/travelers/cruise-travel-during-covid19.html