Should Sen. Robert Menendez (D-N.J.) resign after indictment on corruption charges?

U.S. Sen. Robert Menendez (D-N.J.) made news by being the first sitting member to be indicted by the Feds on bribery charges since 1980. The 14-count indictment accuses him of using his position to help his friend Dr. Salomon Melgen's businesses including intervening over Medicare charges. Each count carries a sentence of up to 15 years in prison. Read more: NY Times http://tinyurl.com/k9qop59 

Sen. Menendez released a statement expressing outrage at the indictment and confidence that he will be vindicated. He said: "I'm not going anywhere...The people...elected me to serve and represent their interests in the United States Senate and that is exactly what I will do, no matter how long it takes to clear my good name." 

(http://www.menendez.senate.gov/imo/media/doc/STATEMENT%20FROM%20SENATOR%20MENENDEZ.pdf)

Should he resign?