The next morning, he bashed the billionaire as a "con artist" on television and days later poked fun at Trump's hands for being small.



"You know what they say about men with small hands?" Rubio said at a Feb. 26 rally. "You can’t trust them.”





Despite the more aggressive tack, the Florida senator hasn't gained traction in the GOP nomination fight, falling hundreds of delegates behind Trump and. His campaign has pinned all of its hopes on next week's Florida primary.