You should consult with an immigration attorney. That said, I've had numerous clients from all parts of the world who have not been deported or denied entry into the US because of DUI's. A DUI is not a crime of moral turpitude, like knowingly leaving the scene of an accident or knowingly driving without a valid license. So long as you do not have a warrant out for your arrest, you should be OK leaving and returning to the U.S.
Show your record to an attorney.
Most likely you'll be OK.
FORMER IMMIGRATION LAW PROFESSOR -- LEGAL DISCLAIMER: This answer is offered for informational purposes only. It does not constitute an attorney-client relationship.
I agree with my esteemed colleagues.
LAW OFFICE OF ARIE EBRAHIMIAN
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DISCLAIMER - NO ATTORNEY-CLIENT RELATIONSHIP: The information provided in this email is intended for informational purposes only. This email does not necessarily reflect current legal or factual developments and is general in nature. Nothing set forth in this email should be construed as providing legal advice regarding an individual situation. Furthermore, the information provided in this email is provided “as is” without any warranty of any kind, either express or implied. Attorney Arie Ebrahimian makes no warranty, express or implied, about the correctness, accuracy or reliability of the information set forth in this email. The information provided in this email should not be construed as legal advice and does not constitute an engagement of legal services with Attorney Arie Ebrahimian or establish an attorney-client relationship absent a written agreement for legal services. Thank you.
No problems with your green card or reentering the US but you will have to wait longer to become a citizen.
The answer provided here is general in nature and does not take into account other factors that may need to be reviewed for a more precise answer. You should consult with an immigration attorney before taking any action. The answer here is not intended to create an attorney-client relationship.