But Ms Aung San Suu Kyi said the NLD had agreed to the oath.
BBC: UN's Ban Ki-moon urges Burma to unite on path to change
Aung San Suu Kyi's National League for Democracy party said it would participate in Myanmar's forthcoming by-elections.
Aung San Suu Kyi has given a cautious welcome to the moves, but says more progress is needed.
Other questions focused on lorry road user charging, the EU-Russia pact, and the release of Aung San Suu Kyi.
BBC: Ministers updates peers on UK visa applications in Iraq
In what country did activist and Nobel Peace Prize winner Aung San Suu Kyi win a seat in parliament?
Previous recipients of the award include Liberian President Ellen Johnson Sirleaf and Myanmar's opposition leader Aung San Suu Kyi.
Aung San Suu Kyi will try to win a seat in Burma's parliament in forthcoming by-elections, her party has confirmed.
Obama then met pro-democracy leader Aung San Suu Kyi at the lakeside home where she spent years under house arrest.
Aung San Suu Kyi's party, the National League for Democracy, is to start printing its own daily newspaper later this month.
Burmese opposition leader and member of parliament Aung San Suu Kyi is making her first visit to India in almost 40 years.
But the one issue Aung San Suu Kyi said was more important than any other was the need for the rule of law.
For example, Aung San Suu Kyi, Megawati Sukarnoputri and Sheikh Hasina each wrote about their fathers, Aung San, Sukarno and Mujibur Rahman respectively.
It has been a homecoming of sorts for Aung San Suu Kyi to the country where she spent many formative years as a young girl.
Burmese opposition leader Aung San Suu Kyi has visited the Delhi college from which she graduated with a degree in politics nearly 50 years ago.
Yet in the summer of 2011, Aung San Suu Kyi declared in the first of her Reith Lectures that she wanted foreign travellers to visit Burma.
Burma is due to hold by-elections in April which will be contested for the first time by the opposition party led by Aung San Suu Kyi.
Earlier this month, Aung San Suu Kyi was elected to parliament in a by-election which saw her party win 43 out of the 45 seats it contested.
The Freedom of Edinburgh award is only held by the Queen, the Duke of Edinburgh, Sir Sean Connery, Nelson Mandela and Burmese democracy campaigner Aung San Suu Kyi.
The gala, which takes place in the Italian capital until 4 November, will open with Luc Besson's The Lady, a biopic of Burmese pro-democracy leader Aung San Suu Kyi.
BBC: Actor Richard Gere to collect Rome Film Festival honour
With the November release from house arrest of Myanmar opposition leader Aung San Suu Kyi, activist groups have called an end to a 15-year tourism boycott of the military-ruled country.
President Thein Sein, opposition leader Aung San Suu Kyi and the speaker of parliament's lower house on Sunday issued a joint declaration in the face of the deadly communal violence.
In the past it has been given to the likes of Sir Roger Bannister, Nelson Mandela, Aung San Suu Kyi, the City of Leiden and the City District of Bonn.
Yet earlier this month, a senior United Nations official, Ibrahim Gambari, visited Myanmar, and was allowed to see Aung San Suu Kyi, the opposition leader, who is under house arrest.
In August Aung San Suu Kyi, the winner of the 1991 Nobel peace prize who is the de facto head of Myanmar's opposition, was invited for talks with Thein Sein himself.
Daughters who have followed their fathers into politics include Myanmar's opposition leader, Aung San Suu Kyi, and the vice-presidents of Indonesia and the Philippines respectively, Megawati Sukarnoputri and Gloria Macapagal Arroyo.
Aung San Suu Kyi, 67, was among those elected to parliament last year and, in her speech on Saturday, the NLD chairwoman acknowledged there had been infighting and factionalism within the party.
But this regulation has since been dropped, and Aung San Suu Kyi said she now wanted the party to contest all 48 seats left vacant in parliament by the appointment of ministers.
Aung San Suu Kyi, who was freed from house arrest in 2010 and is now a member of parliament, arrived in the US on Monday for her first visit to the country in two decades.
Britain's call to suspend sanctions against Myanmar, which was quickly backed by opposition leader Aung San Suu Kyi, will likely put more pressure on the EU to review restrictions on trade with the former military state.
Members of Dublin city council voted unanimously to confer the honour, which is also being given to Burmese opposition leader Aung San Suu Kyi, who won the 1991 Nobel Peace Prize while living under house arrest.
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