men serving in the military and took visible positions as nurses, relief workers, and ambulance drivers to support the war effort, NAWSA organizers argued that women's sacrifices made them deserving of the vote. By contrast, the NWP used the war to point out the contradictions of fighting for democracy abroad while restricting it at home. In 1917, the NWP began picketing the White House to bring attention to the cause of women's suffrage. In 1914 the constitutional amendment proposed by Sargent, which was nicknamed the "Susan B. Anthony Amendment", was once again considered by the Senate, where it was again rejected. In April 1917 the "Anthony Amendment", which eventually became the Nineteenth Amendment, was reintroduced in the House and Senate. Picketing NWP members, nicknamed the "Silent Sentinels", continued their protests on the sidewalks outside the White House. On July 4, 1917, police arrested 168 of the protesters, who were sent to prison in Lorton, Virginia. Some of these women, including Lucy Burns and Alice Paul, went on hunger strikes; some were force-fed while others were otherwise harshly treated by prison guards. The release of the women a few months later was largely due to increasing public pressure. Final congressional challenges In 1918, President Wilson faced a difficult midterm election and would have to confront the issue of women's suffrage directly. Fifteen states had extended equal voting rights to women and, by this time, the President fully supported the federal amendment. A proposal brought before the House in January 1918 passed by only one vote. The vote was then carried into the Senate where Wilson made an appeal on the Senate floor, an unprecedented action at the time. In a short speech, the President tied women's right to vote directly to the war, asking, "Shall we admit them only to a partnership of suffering and sacrifice and toil and not to a partnership of privilege and right?" On September 30, 1918, the proposal fell two votes short of passage, prompting the NWP to direct campaigning against senators who had voted against the amendment. Between January 1918 and June 1919, the House and Senate voted on the federal amendment five times. Each vote was extremely close and Southern Democrats continued to oppose giving women the vote. Suffragists pressured President Wilson to call a special session of Congress and he agreed to schedule one for May 19, 1919. On May 21, 1919, the