Ayala declined to be interviewed Wednesday. But Malloy's office later released his Tuesday resignation letter to gubernatorial Chief of Staff Brian Durand, in which he said, in part: "Although this past year has been challenging I worked diligently to bring about the necessary changes to the Department of Motor Vehicles." Those, he wrote, included running a new program approved by the legislature to give driver's licenses to undocumented immigrants and "the modernization of our computer system, the single largest change the [DMV] has implemented in over 40 years."