Trump threatens to commit potential war crimes on Iran

Tonight on The Last Word: Donald Trump downplays the Iran war and calls it a “skirmish.” Also, House GOP adopts the budget plan to fund Trump’s Iran war. Plus, the House Judiciary Committee makes a criminal referral for Jack Smith. And GOP election deniers seek Arizona’s most powerful offices. Sen. Gary Peters, Rep. Brendan Boyle, Rep. James Walkinshaw, Brahm Resnik, and Bale Dalton join Catherine Rampell.