I've added immigration as a practice area for this question. I hope that helps you find the information you're looking for.
USICS stated in their DACA announcement that, in general a DUI will automatically bar someone. However, if the conviction has been expunged they will look at the conviction on a case-by-case basis. Assuming this is your only criminal conviction, and you have no history of being accused of immigration fraud, I would encourage you to at least try. USCIS is not placing people in removal proceedings unless they meet a certain profile--even if the application is denied--and you would not fit that profile. To win the application, however, you would have to be extremely persuasive. You would want to provide a lot of information about your character and good works. Statements from people should specifically address their first hand knowledge of your drinking habits and whether you drink and drive. You should probably hire an attorney.