During the 16th Legislative Term of the Bundestag between 2005 and 2009, Leutheusser-Schnarrenberger was spokeswoman on legal policy for the FDP parliamentary group, chairwoman of the FDP in the parliamentary committee on legal affairs and alternate member in the parliamentary committee on human rights and humanitarian aid. From 2009, she also served on the parliamentary body in charge of selecting the judges of the Highest Courts of Justice, namely the Federal Court of Justice (BGH), the Federal Administrative Court (BVerwG), the Federal Fiscal Court (BFH), the Federal Labour Court (BAG), and the Federal Social Court (BSG).