From Kauffman’s Ain’t My America:
American flag lapel pins had been distributed to members before the president spoke to Congress on April 2, 1917, requesting a declaration of war. It took a certain obdurate courage to refuse to wear the colors; Senator La Follette was among the refusers, as was the Mississippi senator Vardaman.
(hat tip: Poulos. Title explained here.)
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2008/05/history-doesnt-repeat-itself-but-it-does-rhyme/217128/
