Consular Electronic Application Center (CEAC) Processing - Travel
https://travel.state.gov/content/travel/en/us-visas/immigrate/the-immigrant-visa-process/step-1-submit-a-petition/step-2-begin-nvc-processing/ceac-electronic-processing.html
WEBKnowledge. Using CEAC is simple. To access your case online, use the unique case number and invoice ID number that NVC sends you. After you log in, you will see a summary of your case that includes the status of each visa applicant and financial sponsor associated with your case. The status chart will tell you what steps you need to take.
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