The Fifth Amendment says that no person shall “be subject for the same offense to be twice put in jeopardy of life or limb.” Therefore state and federal crimes must be different or they cannot try a person twice for the same “crime.” That’s why in the Rodney King case the police were first tried for assault crimes by the state then later of violating the civil rights of Rodney King by the feds. I don’t see how this law changes anything unless the presidential pardon were to occur before a trial on federal charges were brought, as in Ford’s preemptive pardon of Nixon.
What they are trying to say is that State law is anything and everything that is federal law. So, if Trump pardons someone for a federal law crime, New York thinks it can prosecute for the same crime.
Problem is, New York State doesn’t have jurisdiction in most cases of federal law, so this law wouldn’t even stand a jurisdiction challenge.