If you are applying for one of these visas, clearly the conviction must be disclosed. It is possible you were really asking about whether you had to disclose the criminal offense at the time that you seek admission to the United States. However, even in this situation, you must disclose the conviction. Information on such waivers appears here . However, this waiver is not available to aliens convicted of controlled substances offenses unless it was a single offense involving the simple possession of 30 grams or less of marijuana.
Information concerning the immigrant waiver appears here .
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