From 2009 to 2017, he was one of the vice chairs of the CDU/CSU parliamentary group under the leadership of chairman Volker Kauder, focusing on Economy and Energy, SMEs and Tourism.

[1] In addition to his committee assignments, Fuchs chaired his party's Mittelstand parliamentary group from 2006 until 2011, which covers issues related to small and medium-sized enterprises.

[1] In the negotiations to form a Grand Coalition of the Chancellor Angela Merkel's Christian Democrats (CDU together with the Bavarian CSU) and the SPD following the 2013 federal elections, Fuchs was part of the CDU delegation in the working group on economic policy, led by Ilse Aigner and Hubertus Heil.

From 2015 until 2016, Fuchs served on a government-appointed commission tasked with recommending how to safeguard the funding of fulfilling Germany's exit from nuclear energy, under the leadership of co-chairs Ole von Beust, Matthias Platzeck and Jürgen Trittin.

[6] During the debate on an overhaul of the German nuclear power system, Fuchs reluctantly noted that "the acceptance of nuclear power is no longer present in large parts of the population", but stressed that the transition to other forms of energy should not harm the national economy or citizen's electricity bills.