Carla, an NRA, is an employee of a foreign corporation. During the tax year, she spends 80 days in the United States purchasing cloth for her employer, a clothing manufacturer. Her yearly salary is $150,000 (translated to U.S. dollars). Carla spends a total of 200 days working during the year. Her employer has no other business contacts with the United States.
What is U.S. Source Income? What is Foreign - Source Income?