N.Y. Correct. Law § 147

§ 147. Alien inmates of correctional facilities. The commissioner\nshall within three months after admission of an alien inmate to a\ncorrectional facility cause an investigation to be made of the record\nand past history of such alien and shall upon the termination of such\ninvestigation cause the record of such alien, together with all facts\ndisclosed by such investigation, and his recommendations as to\ndeportation, to be forwarded to the United States immigration\nauthorities having such matters in charge.\n