MO HB1625

Removes the requirement that a person must "know" a controlled substance is mixed with another substance for the offense of delivery of a controlled substance causing death (Class A felony); applies to Schedule I and II substances

Lowers the fentanyl trafficking threshold from more than 10 milligrams to more than 3 milligrams for first and second degree drug trafficking charges

Separates carfentanil from fentanyl provisions, making possession of any amount of carfentanil a trafficking offense (versus the previous combined 10mg threshold)

Increases the Class A felony threshold for fentanyl from 20 milligrams to 14 milligrams, while establishing a separate Class A felony threshold for carfentanil at more than 0.05 milligrams

Trafficking drugs in the first degree remains a Class B felony (Class A for larger quantities); trafficking in the second degree remains a Class C felony (Class B or A for larger quantities)