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Pope Francis addressed Congress on Thursday, calling on elected officials to work together to solve pressing issues and to avoid the polarization that gridlocked the legislative branch. “There is another temptation which we must especially guard against: the simplistic reductionism which sees only good or evil; or, if you will, the righteous and sinners,” said the Pope.

Pope Francis is far from the first world leader to speak to legislators. From boundary-pushers to controversial figures and world-changing peace visits, here are seven other times foreign dignitaries addressed a joint session of Congress.

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