Charles Koch told ABC on Sunday he thinks "it's possible" a Hillary Clinton presidency would be better than putting a Republican in the White House, another comment Trump took issue with.
http://www.msn.com/en-us/news/politics/trump-says-he-doesnt-need-koch-i-got-my-own-money/ar-BBsmdNs?li=BBnb7Kz&ocid=mailsignout
Not sure that makes Koch pro-Hillary or just dismayed at the terrible choices of Trump and Cruz.