jim acosta where the president will make history tomorrow, being the first sitting u.s. president to visit ethiopia. thank you both. i want to go to washington now. major development. it is not every day that you hear one senator calling another essentially a liar. especially in that sacred chamber. it is exactly what happened. gop presidential hopeful ted cruz had words for mitch mcconnell. yesterday, the most powerful man in the senate. sunlen serfaty joining me from washington. take us through this. reporter: well poppy, cruz is really mad at mcconnell for procedural moves that he s making that cruz says are dishonest of mcconnell. cruz claiming that mcconnell promised him that he would not cut a deal and allow for a vote on something called the export-import re-authorization. this is something that many conservatives are against.