U.S. Sen. Robert Menendez, D-New Jersey and his wife, Nadine, were charged with conspiring for a public official to act as a foreign agent in a superseding indictment filed in the Southern District of New York Thursday, two weeks after the duo pleaded not guilty to bribery charges.

Prosecutors in the new indictment accuse the Menendezes of working with a co-defendant, Egyptian-American businessman Wael Hana, to have Sen. Menendez act as an agent of the government of Egypt.