Müller was chairman of the Junge Union's Bavarian section from 1987 until 1991. In this position, his calls in favour of capital punishment for drug dealers caused significant controversy.[4][5]
From 1994 until 2021, Müller was a member of the German Parliament (Bundestag) for Oberallgäu. He served on the committees for foreign and defense policy and was the spokesman on Europe, foreign, and development policy for the CSU group.[6]
Secretary of State at the Federal Ministry of Food, Agriculture and Consumer Protection, 2005–2013
From 2005 to 2013, Müller served as Parliamentary State Secretary at the Federal Ministry of Food, Agriculture and Consumer Protection under ministers Horst Seehofer (2005–2008) and Ilse Aigner (2008–2013) in the first and second cabinets of ChancellorAngela Merkel. In this capacity, he was responsible for international relations, third-world development projects, and world food aid programs, among other issues.[6] In 2011, he participated in the first joint cabinet meeting of the governments of Germany and China in Berlin; his counterpart in the Chinese government at the time was Han Changfu.[7]
Following the 2013 federal elections, Müller was part of the CDU/CSU team in the negotiations with the SPD on a coalition agreement.
Federal Minister of Economic Cooperation and Development, 2013–2021
Since 2013, Müller has been Federal Minister of Economic Cooperation and Development in the third cabinet of Chancellor Angela Merkel; he was succeeded as Parliamentary State Secretary by Peter Bleser.
In August 2015, Müller was part of Chancellor Merkel’s delegation to the first joint cabinet meeting of the governments of Germany and Brazil in Brasília.[12] In January 2016, he participated in the first joint cabinet meeting of the governments of Germany and Turkey in Berlin.[13]
In September 2020, Müller announced that he would not stand in the 2021 federal elections but instead resign from active politics by the end of the parliamentary term.[14]
Director General of the United Nations Industrial Development Organization
While still serving as minister, the German government nominated Müller as its candidate for Director General of the United Nations Industrial Development Organization (UNIDO). In July 2021, he was selected over Bernardo Calzadilla Sarmiento (Bolivia) and Arkebe Oqubay (Ethiopia) by the organization's Industrial Development Board.[15] This selection was confirmed by UNIDO's 19th General Conference in late 2021. Müller took up the position in December 2021.[16]
Political positions
Human rights and development
In April 2014, Müller became the first member of Chancellor Angela Merkel's cabinet to publicly confront world football's governing body FIFA over its allocation of the 2022 FIFA World Cup to Qatar, criticizing that the choice contradicted global efforts to tackle climate change and that human rights breaches on the country's stadium construction sites even extended to "slave labor."[17] Later that year, he publicly accused Qatar of funding Islamic State (IS) militants, arguing that the country was the "keyword" when it comes to IS financing.[18]
Müller is strongly in favor of extending subsidizing German agriculture for export, which he hopes will lessen the flow of refugees coming to Europe.[5]
Relations to the African continent
Müller has in the past voted in favor of German participation in United Nations peacekeeping missions as well as in United Nations-mandated European Union peacekeeping missions on the African continent, such as in Somalia – both Operation Atalanta and EUTM Somalia (2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2018), Darfur/Sudan (2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and 2018), South Sudan (2011, 2012, 2013, 2015, 2016 and 2017), Mali (2013, 2014, 2015, 2016, 2017 and 2018), the Central African Republic (2014), and Liberia (2015). He abstained from the vote on extending the mandate for Mali in 2016.
During an official visit in 2019, Müller described the slaughter of some 65,000 Herero and 10,000 Nama tribespeople in Namibia between 1904 and 1908 as genocide, one of the most senior government members to use the term while compensation claims were under discussion.[20]
Other activities
Corporate boards
KfW, Ex-Officio Member of the Board of Supervisory Directors[21]
International organizations
Joint World Bank-IMF Development Committee, Member[22]