The correct answer to this open question is the following.
The FAA is the Federal Aviation Administration, an agency created in August 1958 that later became part of the US Transportation Department.
The goal of the FAA is to research and survey to develop the most advanced protocols in security for the airplane transportation system and ensure effective traffic control.
This includes all the possible scenarios in which there could be a risk in the navigation process, including portable electronic devices (PED). Although there has never been any scientific evidence that these devices can represent a real danger for airplanes, the FAA banned the use of these electronic devices as a precautionary or preventive measure, during take-off and landing.
The United States President, as the chief of the Cabinet, has the power to interb¿vene and influence decisions in the US Transportation Department and can issue recommendations to FAA.
Indeed, recently, the executive branch has elaborated some comments in this regard.