According to Marine Corps regulation MCO P1020.34F of the Marine Corps Uniform Regulations chapter 3, a male Marine is not allowed to carry an umbrella while in uniform. There is no provision in the Marine Corps uniform regulation guidelines that allows a male Marine to carry an umbrella.
http://dailycaller.com/2013/05/16/obama-breaches-marine-umbrella-protocol/#ixzz2Tfo0Yq00