Wagenknecht was elected a Member of the Senate of the Czech Republic for the Czech Pirate Party in the 2018 election. In October 2019, Wagenknecht "launched legal action at the European Court of Justice after the European Council failed to respond to his concerns about the alleged conflict of interest" of the acting Prime Minister of the Czech Republic, Andrej Babiš.EU leaders face legal action over Czech PM's alleged conflict of interest. TheGuardian.com. Jennifer Rankin in Brussels. 31 Oct 2019. Wagenknecht also investigated the alleged subsidy fraud of Prime Minister Babiš.Wagenknecht: Větší dotační podvod než čerpání dotací holdingem pana premiéra jsem v životě neviděl (in Czech). ČT24. 04.12.19.
