WASHINGTON, Dec 19 (Reuters) – A U.S. appeals court on Monday said the White House could not require federal contractors to ensure that their workers are vaccinated against COVID-19 as a condition of government contracts.

The U.S. government has contracts with thousands of companies, and courts have said the issue could affect up to 20% of U.S. workers.

A panel of the 5th Circuit Court of Appeals voted 2-1 to uphold a lower court decision that blocked President Joe Biden’s September 2021 contractor vaccine executive order in those states after Louisiana, Indiana, and Mississippi brought suit to seek invalidation of the mandate.