U.S. Sen. Bob Menendez is telling allies he will step down after being convicted on federal corruption charges, NBC News reported Wednesday. Menendez had faced expulsion from the Senate after Democrats and Republicans called for his ouster over his crimes, which included acting as a foreign agent for Egypt. Now he faces decades in prison. The news network, citing two sources familiar with the senator’s plans, said Menendez appears to be relenting to mounting pressure to resign. The senior Democratic senator from New Jersey was convicted Tuesday on bribery charges following a nine-week federal …