Yes, severely. Most sex offenses are classified as aggravated felonies or crimes involving moral turpitude under federal immigration law, and a conviction typically means mandatory detention, deportation, and permanent inadmissibility for non-citizens-including green card holders. Naturalization is barred. Even some plea outcomes that look favorable in state court trigger immigration consequences that destroy the client's status. This is why a Rhode Island sex crimes lawyer handling any case involving a non-citizen must coordinate with immigration counsel from day one. The plea structure matters as much as the sentence. Do not accept any resolution in your case without a full immigration analysis first.