Congress is a huge target for spies. Members and staff need a wake-up call and training

It’s no secret that China is willing to influence and undermine U.S. interests and national security by any means possible. On May 11, Eileen Wang, the mayor of Arcadia, Calif., resigned after pleading guilty to acting as a foreign agent for China, marking the latest high-profile example of the extent of our foreign adversaries’ intelligence operations.

The Chinese Communist Party is targeting U.S. lawmakers and officials, from the state and local levels to our nation’s capital. But not...