 FACT: Laurie, Sams friend who is a call girl, is brought to the  White House State Dinner by a major contributor. While the fact that  he is a major contributor would help, the Secret Service would have  run background checks on anyone who was invited to the White House  and would potentially meet the President. Laurie was introduced as  "Brittany" by the contributor, but would not have been admitted into  the White House under a pseudonym. Additionally, Laurie says that  she is told by the contributor what to wear but does not know where  shes going until the "date". However, with the background check,  Laurie would have had to provide certain information (likely birth  date and social security number) in advance, something that her  client would likely *not* have available for her.