One of Buzek's major challenges as EP president was dealing with the allegations of corruption, illegal lobbying and mismanagement of public funds of which several members of the European Parliament have been accused in the wake of a cash-for-amendments scandal. On 7 July 2011, the Conference of Presidents approved the first-ever code of conduct for MEPs and it was officially endorsed by the parliament on 1 December 2011. The code sets out rules and principles that MEPs should follow in their dealings with outside parties in order to avoid conflicts of interest. "Increased powers of the European Parliament must be accompanied by an increased transparency and accountability on behalf of its members" Buzek has said of the code. According to the code, MEPs have to provide clear declarations of their paid activities outside parliament, as well as the salary they receive. They also have to declare all other activities which might constitute a conflict of interest. The code contains an explicit ban on MEPs receiving payments or other rewards in exchange for influencing parliamentary decisions. It also sets out clear rules on the acceptance of gifts and on the issue of former MEPs working as lobbyists.