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Photo: Drew Angerer/Getty Images

The chairs of the House Foreign Affairs, Intelligence and Oversight committees said in a letter Tuesday that Secretary of State Mike Pompeo "appears to have an obvious conflict of interest" over President Trump's impeachment inquiry. And they warn that Pompeo may be in violation of the law if he tries to prevent staff from testifying.

Why it matters: The letter to Deputy Secretary of State John Sullivan is the latest escalation in a war of words between Pompeo and these House committees probing the Trump administration's alleged efforts to pressure Ukraine to investigate 2020 candidate Joe Biden.

  • Pompeo sent a letter to the House Foreign Affairs Committee earlier Tuesday accusing Democrats of "an attempt to intimidate, bully, and treat improperly" officials from the State Department who've been asked to cooperate in the investigation.
  • The secretary of state has been subpoenaed to release to the committees documents related to the Ukraine probe, and he's expected to face increased scrutiny following reports that he was present during President Trump's phone call to his Ukrainian counterpart that triggered the whistleblower complaint.
  • The State Department inspector general has requested to meet Wednesday with several Senate and House committees on the issue.

Read the letter to to Deputy Secretary of State John Sullivan:

Go deeper:

Editor's note: This article has been updated with new details throughout.

Go deeper

America rebalances its post-Trump news diet

Illustration: Annelise Capossela/Axios

Nearly halfway through President Biden's first 100 days, data shows that Americans are learning to wean themselves off of news — and especially politics.

Why it matters: The departure of former President Trump's once-ubiquitous presence in the news cycle has reoriented the country's attention.

Why migrants are fleeing their homes for the U.S.

Illustration: Eniola Odetunde/Axios Photo: Herika Martinez /Getty Images 

Natural disasters in Central America, economic devastation, gang wars, political oppression, and a new administration are all driving the sharp rise in U.S.-Mexico border crossings — a budding crisis for President Biden.

Why it matters: Migration flows are complex and quickly politicized. Biden's policies are likely sending signals that are encouraging the surge — but that's only a small reason it's happening.

Cities' pandemic struggle to balance homelessness and public safety

Illustration: Sarah Grillo/Axios

Addressing homelessness has taken on new urgency in cities across the country over the past year, as officials grapple with a growing unhoused population and the need to preserve public safety during the coronavirus pandemic.

Why it matters: It’s led to tension when cities move in to clear encampments — often for health and safety reasons — causing some to rethink the role of law enforcement when interacting with people experiencing homelessness.