After a roller coaster month, it seems clearer than ever that President Donald Trump has lost control of the trade war—and as Congress returns to session, it seems more obvious than ever that it should take action to limit his ability to wage it.
Consider all that’s happened since August 1, when Trump announced plans to impose new tariffs on Chinese imports. That announcement—the first major escalation of the trade war since last year—was made via Twitter and without first alerting Chinese…
