The United States and South Africa share strong educational and people-to-people ties, significant economic and political interests, as well as common development objectives throughout Africa. ... The United States seeks opportunities for increased U.S.-South African cooperation on regional and international issues.
The right to a speedy trial
that means that the government can't just lock you up forever while 'waiting' to give you a trial
The ultimate goal of the United States in their intervention in Mexico in 1914 was to have a neighbor that is stable, that they will be able to influence and control to a certain level, and protect their economic and political interest.
The intervention of the United States was a very variable and very controversial. They did not stick with one side to support, but instead they were changing sides, usually supporting the person in power, except when the French intervened too.
Also, the USA openly threatened Mexico that it will use military power in order to protect its interests and its citizens that own businesses and property in the country.