A system spokesman said the change better reflects Motor Vehicle Administration policy.
Officials held the 25-year-old student and green card holder in Dulles airport after she returned from Turkey.
Aida Mohammadi, who has a green card, was returning from visiting relatives in Turkey.
U.S. Sen. Chris Van Hollen (D-Md.) was one of many politicians to voice their concerns.
Heroin-related deaths in Maryland have tripled since 2010.
The former Army solider was convicted in 2013 for leaking classified documents.