An Empire by any other name will still fall. They all do.
“Policing the world” is no such thing. Our political betters now make a disaster of everything being done.
US involvement overseas now seems only to be to push the advantage of, insiders crony-capitalists, corrupt politicians, and their extreme ideologies. Our government is too corrupt, and our nations politics now far too divided to spend the massive sums, and the lives of young Americans, on wars overseas.
In Syria, for example, only ones who seem to be benefitting from our proxy-war to overthrow Assad are the Saudis. Who benefitted from Obama/Clinton’s assassination of Khaddafy?