In 1997 the United States Senate passed a resolution recognizing the influential role that Americans of Scottish descent have played in the development of the United States of America. This was a single year resolution.
On March 20, 1998 the Senate passed another resolution
(Resolution 155) recognizing April 6th as National Tartan Day on
a permanent basis. On March 9, 2005 the United States House of
Representatives passed a companion resolution (Resolution 41) with the same
wording as the Senate resolution.
On April 4. 2008 President George W. Bush issued a Presidential proclamation declaring April 6, 2008 as National Tartan Day.
April 6th was selected as National Tartan Day because it commemorates the signing of the Declaration of Arbroath in 1320. That Declaration asserted Scotland's sovereignty and indpendence from England.
". . .for as long as but a hundred of us remain alive, never will we on any conditions be brought under English rule. It is in truth, not for glory, nor riches, nor honours that we are fighting, but for freedom – for that alone, which no honest man gives up but with life itself."
Annually on April 6 the National Tartan Day Society of
Washington hosts a gathering of Scots at the State Capitol Building in
Olympa, Washington to publicly read the US Senate and House resolutions.