Federal prosecutors are seeking to dismiss charges against a woman shot by Border Patrol last month. Marimar Martinez and her co-defendant, Anthony Ruiz, were charged with impeding a federal officer with a deadly weapon when her car collided with a Border Patrol vehicle in Chicago’s Brighton Park neighborhood on October 4. But Martinez has argued the opposite: Border Patrol agent Charles Exum crashed into her car, and then shot her. On Thursday, prosecutors moved to dismiss the charges just