Abu Hamza al-Masr, formerly known as Mustafa Kamel Mustafa, had preached at the Finsbury Park mosque after having been jailed for seven years for inciting murder and racial hatred. Hamza was on trial in New York accused of conspiring to set up a terrorist training camp in Oregon and helping abduct two American tourists and 14 other people in Yemen in 1998. More terrorists could be kicked out of the country if it were not for the Liberal Democrats led by Nick Clegg with whom the Conservatives were allied in coalition government between 2010 and 2015, suggested Cameron on 20 May 2014. The Government needed to restore Britain's ability to deport extremists, said Cameron, but it was crucial to overhaul the European Convention of Human Rights to do this. Cameron's proposal to abolish the Human Rights Act 1998 and create a British Bill of Rights would have enabled some of these measures, as well as resolving issues including the rights of terror suspects and the ability of prisoners to vote. However, Cameron has opposed leaving the ECHR altogether.