- April 22, 2022 – Virtual
- November 7, 2021 – Baltimore, Maryland (and Virtual)
- March 8, 2021 – Virtual
- September 21, 2020 – Virtual
- March 10, 2020 – Omaha, Nebraska
- September 29, 2019 – Reno, Nevada
- March 5, 2019 – Denver, Colorado
- August 19, 2018 – Atlantic City, New Jersey
- March 27, 2018 – Norfolk, Virginia
- August 20, 2017 – Tampa, Florida
- March 7, 2017 – Spokane, Washington
- August 21, 2016 – Kansas City, Missouri
- March 16, 2016 – Pittsburgh, Pennsylvania
- August 16, 2015 – Portland, Oregon
- March 10, 2015 – Omaha, Nebraska
- August 17, 2014 – Quebec City, Quebec
- March 11, 2014 – Denver, Colorado
- September 8, 2013 – Little Rock, Arkansas
- May 15-17,2013 – Kansas City, Kansas
- August 9, 2012 – St Paul, Minnesota
- March 13, 2012 – Atlanta, Georgia
- September 4, 2011 – Seattle, Washington
- March 15, 2011 – Kansas City, Missouri
- September 12, 2010 – Pittsburgh, Pennsylvania
- May 5-7, 2010 – Fayetteville, North Carolina
- August 30, 2009 – Nashville, Tennessee
- March 17, 2009 – Arlington, Virginia
- April 29 – May 2, 2008 – Chicago, Illinois
- September 2, 2007 – San Francisco, California
- April 27 – 29, 2007 – Corpus Christi, Texas
- September 10, 2006 – Lake Placid, New York
- March 22-25, 2006 – Columbus, Ohio
- September 11, 2005 – Anchorage, Alaska
- May 20-22, 2005 – Buffalo, New York
- August 2004 – Madison, Wisconsin
- June 26-27, 2004 – San Antonio, Texas
- August 10, 2003 – Quebec City, Quebec
- June 15, 2003 – Boise, Idaho
