Sen. Jeff Merkley: Family on board for a 2020 presidential run and he won't defer to Sen. Bernie Sanders

Last election cycle, Sen. Jeff Merkley, D-Oregon, was the only one of Sen. Bernie Sanders’ Senate colleagues to support his presidential primary campaign against former Secretary of State Hillary Clinton.

Now, Merkley is actively exploring a run of his own -- telling “Powerhouse Politics” podcast hosts ABC News' Rick Klein and Mary Bruce that he won’t defer to Sanders or anyone else.