Entry regulations for american citizens
Passport required.
Visa not required for stays up to 3 months, extendible.
For additional information consult the Embassy of Morocco, 1601 21st St., N.W., Washington, D.C. 20009 (202/462-7734) or Consulate General in New York (212/213-9644).
Vaccination
No vaccinating regulations on a direct entry from the US "Peel it, boil it or forget it!".