My understanding is that most crimes that don't involve the US as a party, maritime law, special cases, etc, are handled by state courts, where the rules differ from state to state. But in certain circumstances these ordinary crimes can become federal cases. Yet the Constitution says nothing about crimes committed by citizens. So when were these rules established?
I'm looking at murder as a particular case of interest. If murder isn't forbidden by the Constitution, when were federal laws first established on how to handle it?