Conscription — a practice most Americans believe should be relegated to the dustbin of history — has returned as an uncomfortable topic of conversation among U.S. allies and adversaries alike. This has generated concern and even conspiracy theories among American voters. But a candid discussion would be healthier. The fact is, if the United States hopes to deter or defeat a Chinese attack on Taiwan, it should be prepared to effectively implement a draft. To be clear, this is a solution of last resort, but one that may be necessary. Right now, U.S. mobilization has not been tested in decades....