Billionaire Koch brothers-backed network stops Nikki Haley spending - BBC.com
- Billionaire Koch brothers-backed network stops Nikki Haley spending BBC.com
- Koch-backed network drops funding for Nikki Haley campaign after South Carolina defeat Fox News
- Trump: Charles Koch, group ‘got played for suckers’ with Haley support The Hill
- Influential Koch network stops spending for Nikki Haley to focus on Senate and House races CNN