The Martian Congressional Republic is the governing body which rules over the four billion inhabitants of Mars. Their flag has a single star and thirty stripes.
The Republic is often times in direct competition to Earth and its governing body, the United Nations. Although Mars has a significantly smaller population than Earth, the ruggedness of the people, as a result of the harsher environment and sparser resources, makes Mars a worthy counterweight to Earth's power. The Martian Congressional Republic Navy (MCRN), although smaller, is considered to be more advanced. The Mars Congressional Marine Corps (MCRMC) is also somewhat smaller but considered slightly more technologically advanced than its UN counterpart.
Like Earth, Mars actively oppresses the Belt and its people for its own needs.