FILE – In this March 1, 2013, file photo Sen. Robert Menendez, D-N.J., participates in a news conference at an airport in Newark, N.J. From the "Keating Five" scandal, one of the more celebrated

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FILE – In this March 1, 2013, file photo Sen. Robert Menendez, D-N.J., participates in a news conference at an airport in Newark, N.J. From the "Keating Five" scandal, one of the more celebrated Congressional ethics cases, to more recent investigations, members of Congress have regularly run into trouble when they cross a sometimes blurry line between helping a supporter and engaging in a quid pro quo. As regards his own Senate Ethics Committee investigation Menendez has said, “No one has bought me, No. 1. No one. Ever.” (AP Photo/Mel Evans, File) less 

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Associated Press
Sat, May 4, 2013 4:06 PM EDT