Following the 9/11 attacks, the United States developed a rigorous system of security vetting for travelers to our homeland, leveraging the full capabilities of the intelligence and law enforcement communities. Since then, the U.S. has added enhanced vetting procedures for travelers and has revised them continuously. Our government applies this process to travelers not once, but multiple times. Refugees are vetted more intensively than any other category of traveler. They are screened by national intelligence agencies and INTERPOL, their fingerprints and other biometric data are checked against terrorist and criminal databases, and they are interviewed several times. These processes undergo review on an ongoing basis to ensure that the most updated and rigorous measures are applied, and any additional enhancements can be added without halting refugee resettlement or banning people from certain countries.