 United Kingdom immigration officers were previously employees of the UK Border Agency, and now work for Immigration Enforcement, a Home Office command, and are appointed by the Home Secretary, whose powers are conferred by the Immigration Act 1971 and who also act in accordance with Immigration Rules.The Immigration Rules are statutory instruments laid down by Parliament under Section 3(2) of the 1971 Act which governs the regulation of entry into the United Kingdom.The Rules are amended by Primary Legislation when required, and provide a framework to ensure that those that come to, or remain in, the UK do so legally, and those that do not can be removed.