Members of the National Defense Strategy Commission say they want their new report, which asserts the United States is woefully unprepared to compete militarily with China, to instill a sense of urgency in Congress and make an impact on the presidential election, though they acknowledge the attention of many senior lawmakers is elsewhere. “If we were at a normal political moment, this report would be a pretty big topic of conversation like the Gaither Report was in the 1950s after...