How do you know that disorderly conduct does not make you inadmissible? It is true that it is not a crime under criminal law, but NY conviction of disorderly conduct equals to a misdemeanor under Federal law. I suggest you consult with an attorney in private. Check this out: http://www.uscis.gov/err/M1%20-%20Application%20for%20Temporary%20Protective%20Status/Decisions_Issued_in_2008/Apr022008_28M1244.pdf
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If your case is closed (meaning you did not receive a Conditional Discharge) it should be sealed and not cause you a problem. If the case is still open and unsealed in theory you could be denied re-entry.... it's up to the Immigration officer. Make sure you bring a Certificate of Disposition with you.
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It will definitely be something that affects anything you do with immigration. You will need an original final disposition. You should speak with an immigration attorney.
This response does not constitute legal advice or the establishment of an attorney-client relationship. I recommend you meet with an attorney.