Career in state politics In 1978, Klein became a member of the CDU. He has been a member of the federal board of the CDU since 2001 and the chairman of the CDU in the district of
Siegen-Wittgenstein since 2003. From 2004 until 2015 he was the chairman of the federal board of the Protestant Working Group of the CDU in
North Rhine-Westphalia. From 1984 until 2005, he was a member of the council of the
Burbach municipality and from 1992 until 1996, he was the mayor of this municipality. In his first two legislative terms in the German Parliament, he served on the Budget Committee and the Subcommittee on
European Union issues. He also was a member of the parliament's financial market committee, a committee that monitored the federal bank rescue package worth 480 billion euros passed on 17 October 2008 and advised on fundamental and strategic issues as well as long-term developments in financial market policy. In 2017, Klein was directly elected with 40,13% votes into the German Bundestag. In the 19th legislative period of the German Parliament, he chaired the Economic Cooperation and Development Task Force of the
CDU/CSU parliamentary group. He was a member of the Committee on Economic Cooperation and Development, a deputy member of the Budget Committee and deputy member of the Committee on Foreign Affairs. In addition to his committee assignments, Klein chaired the German-Pacific Parliamentary Friendship Group of the German
Bundestag. In July 2023, Klein announced that he would not stand in the
2025 federal elections but instead resign from active politics by the end of the parliamentary term. == Other activities ==