The president doesnt get to interpret the constitution last I checked thats the Judicial Branch. Something Obviously unconstitutional does not exist untill they say it does.
false. Courts do not make laws unconstitutional, the constitution does. The courts merely apply it. A law that is repugnant to the constitution is unconstituional when its written.
Also the idea that courts "interpret" the law is bogus, what courts do is apply the law based on the interpretive arguments of the parties before them. The executive in enforcing the law must first interpret it to discern its meaning, and most court cases are not about the court interpreting anything, they are the courts adjudicating the executive branches interpretation.