The opacity surrounding the activity of interest groups—or lobbies—in the Congress of Deputies is about to end. Or at least, a law is now being prepared to attempt to regulate them. This Tuesday afternoon, the plenary session debated a proposal by the PSOE (Spanish Socialist Workers' Party) to limit their activity, requiring them to register in a public registry—as is already done in Catalonia—and to comply with the chamber's code of conduct. In the event of noncompliance and the dissemination of, for example, false information, a sanctioning regime is established that could lead to expulsion from Congress. The Spanish government's partners have already announced they will vote in favor, while the PP and Vox have accused the Socialists of promoting the initiative when they are "besieged by corruption," criticized Carmen Navarro, a member of the Popular Party (PP).