Key witness at bribery trial of Sen. Bob Menendez faces grueling day of cross-examination

Read MoreThe government’s prized turncoat witness at the bribery trial of Sen. Bob Menendez has been politely combative as defense lawyers try to poke holes in his testimony and portray him as a habitual liarThe government’s prized turncoat witness at the bribery trial of Sen. Bob Menendez has been politely combative as defense lawyers try to poke holes in his testimony and portray him as a habitual liar