Overview
- Marcel Bauer, a Left Party MP, was expelled from the Bundestag on May 15 for refusing to remove his Baskenmütze during a session.
 - Bundestag President Julia Klöckner and Vice President Andrea Lindholz enforced the expulsion, citing house traditions, though no explicit dress code exists.
 - Bauer's appeal against the expulsion was rejected by the Bundestag majority, with SPD, Greens, and Union voting against him, while Die Linke and AfD supported his case.
 - On May 21, Bauer returned to the plenary carrying the Baskenmütze in his hand as a symbolic gesture of protest against the lack of clear rules.
 - As of May 23, Bauer announced he will forgo wearing headgear in the Bundestag until the legal framework for dress code enforcement is clarified.