[5] She ran unsuccessfully as the Democratic candidate for Congress in New Hampshire's 2nd congressional district during the 2002 United States midterm elections.

[7] In 2006, she earned her Ph.D. in history with a focus on Human Rights and United States Foreign Policy from the University of Southern Denmark.

[8] In 2009, Swett was awarded the Knight's Cross of the Order of Merit of the Republic of Hungary for her efforts in setting up the Tom Lantos Institute in Budapest, continuing her late father's work for the benefit of ethnic minorities there.

She was a Congressional staffer, first as a legislative assistant and then as Deputy Counsel to the Criminal Justice Subcommittee of the Senate Judiciary Committee.

[18] In 2006, she supported Lieberman's successful 2006 re-election campaign as an Independent against Democrat Ned Lamont[17] and Republican nominee Alan Schlesinger.

[20] On January 18, 2007, Katrina Swett announced her candidacy for the U.S. Senate in the 2008 elections in New Hampshire, in hopes of being the Democratic nominee to unseat incumbent Republican John E. Sununu.

On January 14, 2010, Katrina Swett announced her candidacy for the Democratic Primary for Congress in New Hampshire's 2nd congressional district in the 2010 elections.

Other topics included her concerns over Russian leadership pulling the country away from democracy, and her admiration for the Dalai Lama's contributions to human rights.

She discussed her failed campaign to represent New Hampshire's 2nd Congressional district in 2010, her husband Richard Swett's service as ambassador to Denmark and representation of New Hampshire's 2nd district for two terms, and raising seven children.Katrina Lantos Swett teaches foreign policy at Tufts University, and is President of the Lantos Foundation for Human Rights and Justice.