I believe Mitt is "leader" enough to call off Trump's attack while Obama is currently melting over Libya and needs a distraction like a pissing contest with an easy to lampoon ("the Donald")Trump.
I checks. The domains helpdonald.com and helptrump.com are both available. What should happen is that someone sets up a site that allows people to “pledge” more money to this and make the total number much bigger than $5 million.