Rubio is not Cruz!! He called McConnell a liar!!!
Yes he did AFTER he and Paul cut a deal with McConnel in January 2014. McConnell would not oppose them running for President in return for Cruz and Paul not opposing any incumbent Senators (including McConnell running in 2014. Cruz was added to the NRSC as a vice-chairman. They kept quiet during the Mississippi debacle.
Cruz made the mistake of believing McConnell after the election was over and McConnell screwed him in 2015. Like Wimpy in Popeye, McConnell promised to pay them tomorrow for a hamburger today.
Cruz is too gullible and just is not ready to be President yet.