CONGRESS VS. THE CONSTITUTION

As we have discussed in class, the constitutionality of the DC vote remains up for question. Since it is not considered a state by the constitution, technically it should not be given voting representation in the government. I will be interested in seeing where this thing goes once it inevitably passes through Congress and is signed into law by the President. Will someone want to challenge the legality of it, and if so who has the right to bring the case in front of the Supreme Court?