Question: David McCullough, who acts as the relief presenter for Leader's Questions, received what award that is considered to e the United States' highest civilian award?

Context paragraphs:
Ram Kumar Caroli: "Ram Kumar Caroli"' is an Indian cardiologist and a former head of the Department of Cardiology at Ram Manohar Lohia Hospital, New Delhi.  A Fellow of the Cardiology Society of India, he served as the personal physician to four presidents of India and as the cardiologist to Jawaharlal Nehru and Lal Bahadur Shastri.  He was honoured by the Government of India in 1969, with the award of Padma Shri, the fourth highest Indian civilian award and the government followed it up with the third highest civilian award of Padma Bhushan in 1974.

David McCullough: David Gaub McCullough ( ; born July 7, 1933) is an American author, narrator, historian, and lecturer.  He is a two-time winner of the Pulitzer Prize and the National Book Award and a recipient of the Presidential Medal of Freedom, the United States' highest civilian award.

Leader's Questions (TV programme): Leader's Questions is an Irish TV programme broadcast on RTÉ One and RTÉ News Now.  It is produced by RTÉ News and Current Affairs and is presented by Bryan Dobson with RTÉ Political Correspondent David McCullough acting as relief presenter.  The programme airs every Wednesday at 10:25 during the Dáil term and broadcasts live proceedings from Leinster House of questions proposed by opposition leaders in parliament to the Taoiseach and the Tánaiste.  The programme is on air for 45 minutes.  Before and after the proceedings the presenter usually chairs analysis of the proceedings with a panel of guests.

Sarvagya Singh Katiyar: Sarvagya Singh Katiyar FRSC popularly known as S. S. Katiyar, is an Indian scientist specializing in enzymology, and the founder Director of Dr. Ram Manohar Lohia National Law University, Lucknow.  He is a former president of the Association of Indian Universities and a former vice chancellor of Chhatrapati Shahu Ji Maharaj University, Kanpur and Chandra Shekhar Azad University of Agriculture and Technology.  He was honoured by the Government of India in 2003 with Padma Shri, the fourth highest Indian civilian award, followed by Padma Bhushan, the third highest civilian award, in 2009.

Krishnaswami Srinivas Sanjivi: Krishnaswami Srinivas Sanjivi (1903–1994) was an Indian medical doctor, Gandhian, social worker and the founder of Voluntary Health Services (VHS), a medical facility in Chennai reported to be serving the lower and middle-class people of the society.  He was honoured by the Government of India in 1971 with Padma Shri, the fourth highest Indian civilian award.  Five years later, the government followed it up by awarding him the third highest civilian award of Padma Bhushan in 1976.

Amalprava Das: Amalprava Das, also known as Amal Prabha Das, was an Indian social worker, Gandhian and the founder of "Kasturba Ashram" at Sarania Hills, Assam, a self help group for women and their economic upliftment and "Guwahati Yubak Sevadal", a non governmental organization working for the social development of harijans.  The Government of India honoured her in 1954, with the award of Padma Shri, the fourth highest Indian civilian award for her contributions to the society, placing her among the first recipients of the award.  A recipient of the 1981 Jamnalal Bajaj Award, Das was honoured again by the Government of India with the second highest civilian award of Padma Vibhushan which she declined to accept.

Sikkim Ratna: Sikkim Ratna (Nepali: सिक्किम रत्न, "translates to Jewel of Sikkim" or "Gem of Sikkim") is the highest civilian award of the Sikkim government.  The award was announced by the state government in 2004 at the 57th Independence Day celebrations.  It is the highest civilian award of the state for outstanding service to the people of Sikkim.  Sikkim Ratna is given in all disciplines of activities, namely social services (Sewa), sports (Khel), music & arts (Kala), literature (Sahitya), and trade & industry (Udyog).

The Congress (1988 film): The Congress is a 1988 documentary film directed by the Emmy Award-winning director Ken Burns.  The Florentine Films production, which focuses on the United States Congress, aired on PBS in 1989.  Narrated by David McCullough, the documentary features use of photographs, paintings, and film from sessions of Congress, in its implementation of the Ken Burns Effect.  Scenes from the Academy Award-winning Frank Capra film "Mr. Smith Goes to Washington" are also used.  The work features numerous interviews from writers and historians including Charles McDowell, David McCullough, Cokie Roberts, George Tames, David Broder, James MacGregor Burns, Barbara Fields, and Alistair Cooke.  Many congressmen are specifically referred to, including Henry Clay, John C. Calhoun, Jefferson Davis, Thomas Brackett Reed, Joseph Gurney Cannon, George William Norris, Jeannette Rankin, and Everett Dirksen.  The film also includes focus on the Congress' work during pivotal periods in United States history, including the Civil War, Civil Rights Movement, and Women's suffrage.  The documentary was released by PBS, on DVD in 2004.  Footage of the Capitol from the film was later incorporated into Burns' later masterpiece, The Civil War.

Devi Shetty: Devi Prasad Shetty (born 8 May 1953) is an Indian cardiac surgeon.  He is chairman and Founder of Narayana Health, a chain of 21 medical centers in India.  He has performed over 15,000 heart operations.  In 2004 he was awarded the Padma Shri, the fourth highest civilian award followed by the Padma Bhushan in 2012, the third highest civilian award by the Government of India for his contribution to the field of affordable healthcare.

Asis Datta: Asis Datta is an Indian biochemist, molecular biologist and genetic engineer, known for his researches on genetically modified foods and food nutritional security.  He is the founder Director of the National Institute of Plant Genome Research and is credited with the discovery of genes that assist in extended preservation of fruits and vegetables.  He is a recipient of the Shanti Swarup Bhatnagar Award, the highest Indian award and in the Science category, and was awarded the fourth highest civilian award of the Padma Shri, by the Government of India, in 1999.  In 2008, he was included again in the Republic Day Honours list for the third highest civilian honour of the Padma Bhushan.

Supporting paragraphs: Leader's Questions (TV programme) David McCullough
Answer: Presidential Medal of Freedom