Juliana Kim An American flag is seen outside the Supreme Court, in Washington, D.C., in November. This week, the high court will hear oral arguments for a case that could change who gets to be a U.S. citizen. Mark Schiefelbein/AP hide caption At a recent U.S. Senate subcommittee hearing on birthright citizenship, Republican lawmakers argued that the legal principle granting automatic citizenship to nearly everyone born on American soil is not just a constitutional or immigration issue: It's also a matter of fraud and national security. "The question before us today is a simple one: Is American citizenship the inheritance of a nation and its people? Or is American citizenship simply a hollow legal definition without protections against fraud, abuse, and bad actors?" Sen. Eric Schmitt, R-Mo., said during a hearing held by the Senate Judiciary Subcommittee on the Constitution earlier this month.…