In addition, he joined the parliament's Council of Elders in 2002, which – among other duties – determines daily legislative agenda items and assigns committee chairpersons based on party representation.

From 2014, he was also a deputy chairman of the Parliamentary Friendship Group for Relations with the States of the Southern Caucasus (Armenia, Azerbaijan, Georgia).

In this capacity, he was part of the parliamentary group's leadership under its successive chairs Thomas Oppermann (2013–2017), Andrea Nahles (2017–2019), and Rolf Mützenich (2019–2020).

In 2015, Kahrs served on the supervisory board of the Bewerbungsgesellschaft Olympia 2024 GmbH, the agency in charge of Hamburg's unsuccessful bid for the 2024 Summer Olympics.

[11] In 1992, Kahrs had a power struggle with Juso member Silke Dose in which he threatened her by calling her phone anonymously at nights.

He was identified by a trap installed by the police and was asked to resign from all posts by 50 members of his party but stayed on after paying a fine.