Why Trump's target should be China, not Panama

Donald Trump is threatening to invade Panama. Chinese influence over the Canal Zone, he argues, undermines U.S. security. 

Ten years ago, I commanded a 60-man counter-narcotics training mission for the Marines to the Panama Canal Zone. Over the last two years, I served on the Select Committee on China in Congress. I introduced the U.S. Supply Chain Security Review Act, which is now the law of the land.

The president-elect is right to support the Monroe Doctrine. This pillar of American...