Exclusive: Koch brothers will **t use funds to try to block Trump **mination
Exclusive: Koch brothers will **t use funds to try to block Trump **mination
NEW YORK (Reuters) - The Koch brothers, the most powerful conservative mega do**rs in the United States, will **t use their $400 million political arsenal to try to block Republican front-runner Donald Trump's path to the presidential **mination, a spokesman told Reuters on Wednesday.