The EVUS application process does not take long. However all EVUS applicants are advised to enroll at least 72-hours before their departure to the United States. Keep in mind that if you don’t have your EVUS, entry to the U.S. will be denied.
This immigration process was established to enhance security and while most applicants receive confirmation within minutes, some applications might take longer to process.
Be sure that before you apply for the EVUS you also hold a B1, B2 or a combined B1/B2 visa. Your passport should be valid and current as it is electronically linked to your EVUS. All applicants receive an enrollment number which you can use to check your status and validation.