Third Presidential elections

Debate guests: Trump takes Obama's half-brother, Clinton picks Cuban

Hillary Clinton will be joined at Wednesday's debate by two well-known billionaires who are backing her campaign, in what may be an attempt to rattle Republican nominee by su btly questioning his own net worth.

Meg Whitman, the Hewlett-Packard CEO and former Republican California gubernatorial candidate, and Mark Cuban, the outspoken billionaire owner of the Dallas Mavericks, will both be Clinton's guests at Wednesday's third and final presidential debate.