Current a student on F-1 status, graduating in a year. Will likely return to the states late in life. Currently charged with drunk driving, case is still ongoing.
Yes you could have difficulty coming back to the US in the future if you are convicted of drunk driving. There is already a ground of inadmissibility that has been used against persons in your situation when applying to come back to the US resulting in those persons having to prove they are not alcoholics. Congress is also considering making a DUI conviction a separate ground for inadmissibility and removability and possibly an aggravated felony. You should have an attorney defending you in this process.
I agree with attorney Murphy. A DUI is considered a "serious misdemeanor." Most US consulates will not grant you a visa to return to the USA if you have been convicted of a DUI. At the very least many consulates require a number of years to pass before you will be granted a visa. You must have a clear record during those years.
Second, if you are here on an F1, a DUI conviction may result in the revocation of your visa. Any violation of the law can be considered a violation of the terms of your visa.