Missing documents or errors on forms can lead to delays or denials. Always double-check that everything is correctly filled out and all required documents are submitted.

Criminal convictions or serious legal issues, particularly those involving drug offenses or fraud, can result in a denial of your application.

If you don’t meet the specific eligibility criteria for the visa or green card you're applying for, such as financial requirements or relationship proof, your application will likely be denied.

If you’ve overstayed a previous visa or have violated the terms of your stay, it can result in a denial of future immigration benefits.