Although this is an immigration case, it is equally helpful in the criminal context.
There is a very clear discussion of both the categorical and modified categorical approaches.
Additionally, the holding that the CSA does not punish mere solicitation is useful for challenging sentencing predicates.
According to the Court, "[w]hile strongly corroborative of intent to commit a
crime, [solicitation] does not cross the line between
preparation and attempt."
This is a good reminder that, when your client's predicate is a state law offense, check to see whether the state's law is interpreted more broadly than its federal counterpart.