Democratic presidential candidate Hillary Clinton says she's "not interested" in receiving a potential endorsement from conservative billionaire Charles Koch.
"Not interested in endorsements from people who deny climate science and try to make it harder for people to vote," Clinton tweeted Sunday.
Clinton's tweet came in response to comments Koch made during an interview on ABC's "This Week with George Stephanopoulos." Koch was asked whether "it is possible another Clinton could be better than another Republican," to which he replied, "It's possible."
"We would have to believe her actions would be quite different than her rhetoric. Let me put it that way," he added. "But on some of the Republican candidates we would -- before we could support them, we'd have to believe their actions will be quite different than the rhetoric we've heard so far."
Also during the interview, Koch slammed Donald Trump in part over the GOP frontrunner's support for a Muslim registry plan.
"I mean, this isn't Nazi Germany. I mean, that's monstrous as I said at the time. So, obviously we totally oppose that," Koch said.
Koch and his brother, David, are billionaire industrialists who support conservative causes.