State sponsors of terrorism?

The US State Department just released its latest list of countries it considers state sponsors of terrorism.  It includes countries that nobody thinks belong there and leaves others that just about everybody think belong on the list.  We leave off a nation that shot down a commercial airliner because it was not identified properly (in international airspace).  The US allows persons to remain in the country that have international arrest warrants related to terrorism. Yet the US condemns other nations that have ex-terrorists within its borders as a result of agreements with the countries where the ex-terrorists come from and prevents them from returning to their homelands.  Many consider this report as authoritative. But in reality, it is a political tool used to frame certain restrictions against other countries.  When will the US quit being the world cop?