Hillary Clinton’s arrogant refusal to debate Bernie Sanders on Fox News just got trumped.  Previously unrecognized political power broker Jimmy Kimmel has arranged something unprecedented.  CBS News reports:

Before hitting a private fundraiser in Los Angeles, Donald Trump taped a guest appearance on ABC's "Jimmy Kimmel Live," where he fielded questions from the late-night host on a range of topics -- including transgender bathrooms, and whether he'd debate Bernie Sanders.

Kimmel asked Trump if he'd be willing to debate Sanders, given that Hillary Clinton had turned her primary opponent down for a California debate. Trump declared he would -- as long as the proceeds go to charity.

As he accepted the hypothetical debate, Trump asked, perhaps jokingly, how much Sanders would be willing to pay him -- for charity -- then conceded that it would be fine if a network were willing to put up the money. Trump also said he has never met Sanders.

Sanders responded almost immediately on Twitter:

Game on. I look forward to debating Donald Trump in California before the June 7 primary.

— Bernie Sanders (@BernieSanders) May 26, 2016

There are still details to be worked out, including which network would televise the event and how much they would pay to charity.  Either candidate could back down, but both men have a strong interest in making Hillary Clinton look like a coward for refusing to engage Sanders in a debate.

So what does Hillary do?  She would look terrible asking to be included, after having refused to debate Sanders.  And she would look terrible by not being there.  In other words, trumped.