However, Congressional Democrats and several health activists have called for more from the administration. The surprising decision by Biden to approve the proposed exemption from patent protection of coronavirus vaccines has simultaneously been strongly reinforced by the European Union. Experts have noted that patent waiver, which will probably not be authorized even for months, would do nothing to enhance the supply of vaccines in the short future, since it may take years before nations create plants and gather their materials and vaccine knowledge. Questions on how to continue have escalated in the last couple of weeks, with US cases falling and illnesses in some of the underdeveloped nations, which are not adequately supplied with vaccines, resulting in new "vaccine apartheid" claims.