We determined that U.S Customs and Border Protection’s (CBP) mail inspection processes and physical security at the John F. Kennedy (JFK) International Airport International Mail Facility (IMF) are ineffective, showing limited progress since our prior audit. CBP inspected approximately [REDACTED] percent of the 1.3 million pieces of mail it received during our June 2019 site visit. CBP also did not timely inspect and process mail from high-risk countries, creating unmanageable backlogs. These deficiencies were largely because of inadequate resources and guidance. Consequently, more than [REDACTED] pieces of mail were sent out for delivery without physical inspection. We made eight recommendations aimed at improving international mail processes at JFK International Airport. CBP concurred with six, but non-concurred with two of the recommendations.