The German president has the power stop the process of law making if he considers a law to be unconstitutional. In the past legislative period, Köhler exercised this right twice. Critics of the law in question, which was designed to intercept access to websites containing child pornography, have two concerns. First, they question the Federal Government's lawgiving authority in this area of crime prevention. Second, they claim that such fundamental changes have been made between the law's first and third hearing, that these hearings actually dealt with two different laws.