Trump picks scandal-plagued Texas AG Ken Paxton over incumbent Sen. John Cornyn in Senate GOP primary

<p>In a Texas-sized shock, President Trump endorsed Ken Paxton for the GOP nomination for Texas' Senate seat. Trump picked Paxton over incumbent Sen. John Cornyn, but waited until months into an expensive primary runoff that has cost over $25 million already. The Inside Politics panel breaks down why, and why now.</p>