Which part of judicial system best completes the bubble labeled in the diagram

I believe the answer is: the prime authority in the US is the US Supreme Court

This mean that every decision that made in the supreme court would overule the decision that made in the lower court.

To be handled by the supreme court, a case must somehow affect the interpretation of the united states constitution.

Explanation:your welcome

since most of current immigration into the u.s., both legal and illegal, is coming from latin america. it would be very difficult to imagine or rationalize a country my fellow citizens are trying desperately to flee into, would pose a threat to my prosperity or freedom. since the u.s. has a long history of intervention, but no record of permanent occupation, i would not feel oppression is the main objective.  

the largest free trade nation, along with the largest gdp in the world wanting to expand it's economic policy on us, and including us, could only be positive. the u.s. government has no interest in, or way of simply forcing american culture on us. and has no track record of it. other nations that adopted american social culture, or "americanization" did so voluntarily, mainly through the choice of allowing american businesses and u.s. citizens to come into their nations, as free operatives.