File Form I-131 for "Advance Parole" before leaving, or your green card application could be canceled.

 DACA recipients can travel for education, work, or humanitarian reasons but only with advance parole.

USCIS can deny your case automatically if you leave without advance parole when it's required.

If you’re under deportation proceedings, traveling is extremely dangerous, you may be considered to have self-deported and barred from returning.