Sunday on 'This Week': Sen. Bernie Sanders and Secretary Mike Pompeo

ABC News Chief White House Correspondent Jonathan Karl goes on the trail in Iowa with 2020 Democratic presidential candidate Sen. Bernie Sanders, I-Vt., exclusively on “This Week” Sunday. Plus, Secretary of State Mike Pompeo discusses the Trump administration’s response to North Korea’s latest launch and the battle for power in Venezuela.

And the Powerhouse Roundtable debates all the week’s politics, with ABC News Senior Congressional Correspondent Mary Bruce, former New Jersey Governor and ABC News Contributor Chris Christie, Democratic Strategist and Collective PAC Co-Founder Stefanie Brown James and Axios National Political Reporter Jonathan Swan.

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