Koch network stops funding Nikki Haley after loss in South Carolina

Haley lost critical support as the Koch brothers, major Republican influencers, decided to stop funding her campaign. Initially backing her, they now see no path to victory and will focus their resources on congressional races instead.

What critical supply did Haley lose?

Who are the Koch brothers and what role do they play in politics?

What decision did the Koch brothers make regarding Halley's campaign?

What was the purpose of Americans for Prosperity's funding?

What strategy have the Koch brothers decided to focus on instead of Halley's campaign?