How is the matter of federal court jurisdiction a reflection of federalism in the united states

This is quite a complex question. In the USA, the Constitution is not precise about the scope of powers and duties of the different layers and branches of government. It was not until the tenure of John James Marshall, a Federalist judge who served at the SCOTUS between 1801 and 1835, that this complex legal question was clarified during the Marbury v. Madison case.

This case established the principle of Judicial Review, by which the judiciary, one of the three branches of government reviews the actions and/or laws or decrees passed by the other two powers. This means that in terms of Constitutionality, the courts have jurisdiction over the other two branches of government. This is part of the system of Checks and Balances.

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.

the 9th amendment

explanation: