Good Tuesday morning. Here are some of the stories making news in Washington and politics today.

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• Amid evidence of deplorable conditions in migrant detention facilities, Congress is trying to rush $4.5 billion in emergency aid to the border while putting new restrictions on President Trump’s immigration crackdown. Some Democrats are resisting, worried that the money would be used to carry out Mr. Trump’s aggressive tactics.

• Pressuring Iran’s leaders and further squeezing its economy in retaliation for what the United States says are recent aggressive acts, the president announced Monday that he was imposing new sanctions on the country.

• Mr. Trump denied the writer E. Jean Carroll’s accusation that he sexually assaulted her in a dressing room in the 1990s, saying, “She’s not my type.” It wasn't his first such response to an assault allegation.