Much early criticism of the initiative also explicitly linked PSI to other international activities of the globally controversial George W. Bush administration, including namely the War on Terror, invasion of Afghanistan to overthrow the Taliban, the 2003 invasion of Iraq, and a general international perception of US unilateralism outside of United Nations frameworks. Domestically in the United States, liberal critics referenced the PSI and its links to Under-Secretary Bolton as an extension of the Bush Administration's "Coalition of the willing." However, over time much of these criticisms have subsided as PSI activities grew to have large bipartisan support in the United States Congress and the PSI continued to be promoted under the Presidency of Barack Obama.