Mass. Gen. Laws ch. 278 § 29D
The court shall not accept a plea of guilty, a plea of nolo contendere, or an admission to sufficient facts from any defendant in any criminal proceeding unless the court advises such defendant of the following: "If you are not a citizen of the United States, you are hereby advised that the acceptance by this court of your plea of guilty, plea of nolo contendere, or admission to sufficient facts may have consequences of deportation, exclusion from admission to the United States, or denial of naturalization, pursuant to the laws of the United States." The court shall advise such defendant during every plea colloquy at which the defendant is proffering a plea of guilty, a plea of nolo contendere, or an admission to sufficient facts. The defendant shall not be required at the time of the plea to disclose to the court his legal status in the United States.
If the court fails so to advise the defendant, and he later at any time shows that his plea and conviction may have or has had one of the enumerated consequences, even if the defendant has already been deported from the United States, the court, on the defendant's motion, shall vacate the judgment, and permit the defendant to withdraw the plea of guilty, plea of nolo contendere, or admission of sufficient facts, and enter a plea of not guilty. Absent an official record or a contemporaneously written record kept in the court file that the court provided the advisement as prescribed in this section, including but not limited to a docket sheet that accurately reflects that the warning was given as required by this section, the defendant shall be presumed not to have received advisement. An advisement previously or subsequently provided the defendant during another plea colloquy shall not satisfy the advisement required by this section, nor shall it be used to presume the defendant understood the plea of guilty, or admission to sufficient facts he seeks to vacate would have the consequence of deportation, exclusion from admission to the United States, or denial of naturalization.
Mass. Gen. Laws ch. 278, § 29D