Lots of things have life involved. Are all of them Federal Government Issues?
How about murder?
Capital punishment?
Adequate medical care?
Adequate nourishment?
Adequate product safety?
Safety from Natural Disasters?
The question we are dealing with here one of checks and balances, not the extent of gov't involvment in our lives.
The role of gov't is to protect the individuals freedom and that includes all arbitrary actions by all levels of gov't including local and state.
We can go to any of the 50 states and find the same judical system in place, the same need for search warrents, the same jury system, etc because of the federal system.