[SomeStupidPoint]

I mean, if the feds really wanted to get in to it, Uber is probably guilty of money laundering.

Their service was illegal under local law, Uber moved the money from their illegal activity in to the banking system and across state lines and a slew of other things that would likely trigger the very broad money laundering laws. Interstate transfer of proceeds from a criminal activity is almost certainly an activity the feds can look into.

I'm guessing the feds can also "assist" the local jurisdictions in the case that the local criminals are an interstate organization that has been committing a slew of crimes across the nation.