Source: Caribbean Airlines
The US Government has advised that, strating December 6th, 2021, all air passengers, regardless of Covid vaccination status, must show a negative Covid-19 test, which must be taken one day before travel to the United States.
For further information on US travel policy kindly visit:
https://travel.state.gov/content/travel/en/international-travel/before-you-go/covid-19_testing_required_US_Entry.html