The <a href="https://en.wikipedia.org/wiki/Act_Prohibiting_the_Return_of_Slaves" id="mwcg" rel="mw:WikiLink" title="Act Prohibiting the Return of Slaves">Act Prohibiting the Return of Slaves</a> is passed by the <a href="https://en.wikipedia.org/wiki/United_States_Congress" id="mwcw" rel="mw:WikiLink" title="United States Congress">United States Congress</a>, effectively annulling the <a href="https://en.wikipedia.org/wiki/Fugitive_Slave_Act_of_1850" id="mwdA" rel="mw:WikiLink" title="Fugitive Slave Act of 1850">Fugitive Slave Act of 1850</a> and setting the stage for the <a href="https://en.wikipedia.org/wiki/Emancipation_Proclamation" id="mwdQ" rel="mw:WikiLink" title="Emancipation Proclamation">Emancipation Proclamation</a>.<sup about="#mwt72" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-13"}}' id="cite_ref-13" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_13#cite_note-13" id="mwdg" style="counter-reset: mw-Ref 13;"><span class="mw-reflink-text" id="mwdw">[13]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-13"><cite about="#mwt69" class="citation web cs1" id="mwB3s"><a class="external text" href="http://www.freedmen.umd.edu/artwar.htm" id="mwB3w" rel="mw:ExtLink nofollow">"Additional Article of War, March 13, 1862"</a>. <i id="mwB30">www.freedmen.umd.edu</i>. <a class="external text" href="https://web.archive.org/web/20190825234718/http://www.freedmen.umd.edu/artwar.htm" id="mwB34" rel="mw:ExtLink nofollow">Archived</a> from the original on 25 August 2019<span class="reference-accessdate" id="mwB38">. Retrieved <span class="nowrap" id="mwB4A">16 February</span> 2020</span>.</cite><span about="#mwt69" class="Z3988" id="mwB4E" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=www.freedmen.umd.edu&amp;rft.atitle=Additional+Article+of+War%2C+March+13%2C+1862&amp;rft_id=http%3A%2F%2Fwww.freedmen.umd.edu%2Fartwar.htm&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+13"></span></span>