Robert Menendez

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FILE - In this Jan. 9, 2014, file photo, Senate Foreign Relations Committee Chairman Sen. Robert Menendez, D-N.J., asks questions at a hearing on Capitol Hill in Washington, Thursday, Jan. 9, 2014. Menendez paid a law firm $250,000 in December 2013 for legal costs related to Justice Department and Senate Ethics Committee investigations into his ties with a major campaign donor. The Democrat also has set up a legal trust to raise money as the investigations continue. (AP Photo/Pablo Martinez Monsivais, File)