Amendments to the constitution, which came into force, were detrimental for fair trial in that they re-introduced the so-called general supervision by the prosecutor's office. Other serious problems included lengthy periods for review of cases because the courts were overloaded; infringement of equality of arms; non-observance of the presumption of innocence; the failure to execute court rulings; and high level of corruption in courts. Independent lawyers and human rights activists have complained Ukrainian judges regularly come under pressure to hand down a certain verdict.