• The Treasury Department said it would not immediately comply with a congressional request to hand over President Trump’s tax returns, setting up a protracted legal battle.
• Senator Elizabeth Warren of Massachusetts raised more than $6 million in the first quarter of the year. That fell short of what several other Democratic presidential candidates received, but she had a strong finish.
• Mr. Pence urged the United Nations to revoke the credentials of Venezuela’s ambassador to the world body, portraying him as a loyalist to a government that has allowed crime, violence and starvation to rise.
• Secretary of State Mike Pompeo left open the possibility of entering a conflict with Iran without first seeking explicit congressional approval, telling senators “there is no doubt there is a connection” between Al Qaeda and Iran.
Today’s On Politics briefing was compiled by Isabella Grullón Paz in New York.
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