Hanjuan Jin of Schaumburg, Ill., a naturalized U.S. citizen who was born in China, was stopped at Chicago’s O’Hare International Airport in 2007. She declared that she had $10,000 in cash in her carry-on luggage; officers found about $30,000. They also found several technical documents labeled “[Company A] Confidential Property,” Chinese documents. Each of the three counts against her carries a maximum penalty of 10 years in prison and a $250,000 fine.”]