What structures are you talking about?
The President is responsible for implementing and enforcing the laws written by Congress. And to that end, appoints the heads of the federal agencies and including the Cabinet. The Vice President is also part of the Executive Branch, ready to assume the Presidency should the need to come to light or and make an appearanance.
<em>The five basic teachings of Islam are;</em>
Shahada: Faith.
Salah: Prayer.
Zakāt: Charity.
Sawm: Fasting.
Hajj: Pilgrimage.
