Last week a federal judge heard the first arguments in a lawsuit challenging certain provisions of the recently-enacted International Megan’s Law (IML),* including one mandating that the passport of any American required to register for a sex offense involving a minor be marked in “a conspicuous location” with a “unique identifier” of their sex offender status. Other challenged provisions of the law authorize the Departments of Homeland Security and Justice to notify destination nations of forthcoming visits from those individuals. On Wednesday the court heard a motion for a preliminary injunction that would block enforcement of the challenged provisions of the law pending the suit’s final outcome. See Doe v. Kerry, Case 3:16-cv-00654 (N.D. Ca.).