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ASSOCIATED PRESS Former first lady Nancy Reagan is helped by Sen. Marco Rubio, Florida Republican, as she falls at the Ronald Reagan Presidential Library in Simi Valley, Calif. Mrs. Reagan, 90, had invited Mr. Rubio to speak at a forum in the library there. Several people rushed to help her as she stumbled. A spokeswoman for the former first lady said she wasn't hurt after tripping over a crowd-control post.

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