Sen. Menendez Faces Expanded Corruption Charges for Allegedly Accepting Bribes and Acting as Foreign Agent

New charges accuse Sen. Menendez of accepting bribes on behalf of foreign government and acting as foreign agent

Superseding indictment alleges Menendez aided government of Egypt with sensitive info and secret steps

Menendez and wife pleaded not guilty last month to corruption over pocketing bribes

Initial charges related to allegations Menendez used influence to obtain hundreds of thousands in bribes

Sen. Menendez is a Democratic senator from New Jersey