the first law passed by the U.S. Congress
...that parts of the first law passed by the U.S. Congress are still on the books?
...that parts of <b id="mwBCo"><a href="./An_act_to_regulate_the_time_and_manner_of_administering_certain_oaths" id="mwBCs" rel="mw:WikiLink" title="An act to regulate the time and manner of administering certain oaths">the first law passed by the U.S. Congress</a></b> are still on the books?