People in Romania are able to form associations to advance their interests, generally without interference from the state. The constitution guarantees freedom of association, and the principal regulation governing CSOs is the Governmental Ordinance 26/2000, which was substantially amended by Law 246/2005. The law states that any organisation must register in a court and the procedure is fairly simple. There are no limitations on CSOs’ sources of income. Most human rights defenders can operate without interference, however on occasion organisations critical of the government face hostile treatment and can become the targets of smear campaigns. As a consequence, some NGOs have refrained from performing advocacy, fearing retribution from politicians.