Can the US afford to lose its 1.1 million international students?

Khadija Mahmoud* is pulling an all-nighter, filled with caffeine and surviving on adrenalin to pack up her belongings so she can catch the train in the morning from Washington, DC to New York City for her summer internship.
Mahmoud is a 21-year old international student who has just finished her junior year at Georgetown University. She is anxious and worried after her immigration lawyer advised against leaving the country for the summer due to the recent border control policies for international students.