I think a drastic reduction in personnel/bases/equipment if it was done too quickly could be very destabilizing. While I don't like America policing the world, that is the current state of affairs and changing that abruptly could be dangerous. 

Cutting expenses by 50% would also be a big change and likely affect some personnel/bases/equipment but also likely cut out a lot of waste and grift. I am not sure you could do it without affecting veterans benefits though which will be immensely politically unpopular. 

> Do you mean cut military expenses by 50% or personnel/bases/equipment etc?

For the sake of this question, let's assume a 50% reduction in both

There would probably be a third assassination attempt.

Do you mean cut military expenses by 50% or personnel/bases/equipment etc?

Politics_And_Law

What would happen if America stopped policing the world and cut military by 50%?

There would probably be a third assassination attempt. 

Do you mean cut military expenses by 50% or personnel/bases/equipment etc? 