News Guide: A look at the Iran nuclear deal and Congress

FILE - In this July 22, 2015 file photo, Sen. Tim Kaine, D-Va., speaks with a reporter on Capitol Hill in Washington. Kaine is backing the international accord with Iran.The former Democratic Party chairman made the announcement on Tuesday in a speech on the Senate floor. He says the deal takes Iran's nuclear program that was on the verge of success and disables it for many years through peaceful diplomatic means. (AP Photo/Cliff Owen, File)WASHINGTON (AP) — Congress’ vote on the international accord to curb Iran’s nuclear program in exchange for billions of dollars in sanction relief stands as the most crucial national security decision since lawmakers voted in 2002 to authorize the invasion of Iraq.

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