**SNIP** More broadly, it has inserted a level of rhetorical uncertainty into one of the core principles defining the responsibilities of members of Congress: whether they serve on behalf of the people from their home state, or whether, once elected, they represent much broader interests. The prosecution, citing Black’s Law Dictionary, argued in a brief filed on Tuesday that “the straightforward answer is that Senator Menendez’s constituents are the New Jerseyans that he was elected to represent in the United States Senate.” But the defense, in a brief that was also filed Tuesday, claimed that the term was significantly amorphous...