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Queen Elizabeth II, Prince Philip, Duke of Edinburgh, are greeted by Rep. Benjamin A. Gilman, R-N.Y., as they appear to onlookers, including Sen. George Mitchell, D-Maine, Sen. Thad Cochran, R-Miss., Sen. Don Nickles, R-Okla., and Sen. Bob Kasten, R-Wis., on May 20, 1991. (Photo by Laura Patterson/CQ Roll Call via Getty Images)

Queen Elizabeth II, Prince Philip, Duke of Edinburgh, are greeted by Rep. Benjamin A. Gilman, R-N.Y., as they appear to onlookers, including Sen. George Mitchell, D-Maine, Sen. Thad Cochran, R-Miss., Sen. Don Nickles, R-Okla., and Sen. Bob Kasten, R-Wis., on May 20, 1991. (Photo by Laura Patterson/CQ Roll Call via Getty Images)

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