New York has now legalized recreational marijuana use. This new law does not legalize marijuana use by aliens under our immigration laws. Aliens who use marijuana in New York or any other state that has legalized recreational marijuana use will risk removal from the United States, inadmissibility to the United States, and ineligibility for naturalization. Marijuana convictions expunged under this law will not be expunged for aliens under our immigration laws.
For more information, consult this article in the New York Times (New York Legalizes Recreational Marijuana, Tying Move to Racial Equity).