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UNITED STATES - JANUARY 31:  Sens. Joe Lieberman, D-Conn., left, and Scott Brown, R-Mass., conduct a news conference in the Capitol on the "Stop Trading on Congressional Knowledge Act."  (Photo By Tom Williams/CQ Roll Call)

UNITED STATES - JANUARY 31: Sens. Joe Lieberman, D-Conn., left, and Scott Brown, R-Mass., conduct a news conference in the Capitol on the "Stop Trading on Congressional Knowledge Act." (Photo By Tom Williams/CQ Roll Call)

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