If you notice, it is only lefties that call the USA an empire.
Golly!
I was not aware of this fact...
https://www.google.com/search?q=american+empire&rls=com.microsoft:en-US:IE-Address&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7ADRA_enUS475&gws_rd=ssl