Question: Which non-EU microstate is a neighbour of the country which held an immigration referendum in February 2014?

Context paragraphs:
Greek bailout referendum, 2015: A referendum to decide whether Greece was to accept the bailout conditions in the country's government-debt crisis proposed jointly by the European Commission (EC), the International Monetary Fund (IMF) and the European Central Bank (ECB) on 25 June 2015, took place on 5 July 2015.  The referendum was announced by Prime Minister Alexis Tsipras in the early morning of 27 June 2015, and ratified the following day by the Parliament and the President.  It was the first referendum to be held since the republic referendum of 1974, and the only one in modern Greek history not to concern the form of government.

Crimean status referendum, 2014: A controversial referendum on the status of Crimea was held on March 16, 2014, by the legislature of the Autonomous Republic of Crimea and by the local government of Sevastopol (both subdivisions of Ukraine).  The referendum requested local populations whether they wanted to join Russia as a federal subject, or if they wanted to restore the 1992 Crimean constitution and Crimea's status as a part of Ukraine.  As a result of the events of Euromaidan, the referendum was held directly after a Russian military takeover of Crimea.  Because of this, the referendum's legitimacy has been heavily disputed by the international community.

Switzerland–European Union relations: The relations between Switzerland and the European Union (EU) are framed by a series of bilateral treaties whereby the Swiss Confederation has adopted various provisions of European Union law in order to participate in the Union's single market.  All but one (the microstate Liechtenstein) of Switzerland's neighbouring countries are EU member states.

Sylhet referendum, 1947: Sylhet Referendum was a referendum held in Sylhet to decide whether Sylhet would remain in Assam and join the new country of India or would join East Bengal and the new country of Pakistan.  The referendum was decided in favor of joining Pakistan.

Swiss immigration referendum, February 2014: The Swiss federal popular initiative "against mass immigration" (German: "Eidgenössische Volksinitiative "Gegen Masseneinwanderung"" , French: "Initiative populaire « Contre l'immigration de masse »" , Italian: "Iniziativa popolare "Contro l'immigrazione di massa"" ) was a referendum that aimed to limit immigration through quotas, as it had been prior to the bilateral treaties between Switzerland and the European Union launched 2002.

Maldivian constitutional referendum, 1953: A constitutional referendum was held in the Maldives in August 1953.  The proposed amendments would result in the country becoming a sultanate again.  This would reverse the outcome of a referendum the previous year, which resulted in the country becoming a republic.  The 1953 referendum was held after the new republican government was overthrown after just a few months.  The proposals were approved by voters, and Muhammad Fareed Didi was proclaimed as Sultan on 6 March 1954.

Guamanian constitutional referendum, 1987: A referendum on a new constitution was held in Guam on 8 August 1987.  Instead of passing the whole constitution as a unit, voters chose to approve each chapter of the document individually.  With a low turnout of 39%, all chapters were approved except for Chapter I on relations with the United States and Chapter VII on Chamorro relations and immigration.  Modified versions of these rejected chapters would be accepted in a referendum later the same year.

Minister for Security and Immigration: The Minister for Security and Immigration was a junior ministerial position in the Home Office.  The post was created on 8 February 2014 by combining the roles of Minister for Security and Minister of State for Immigration, following the resignation of the Minister for Immigration Mark Harper MP.  James Brokenshire MP, then the Minister for Security, assumed the enlarged role.  Brokenshire has a permanent seat on the National Security Council (NSC).

Racism in Italy: Racism in Italy deals with the relations of Italians and other ethnic groups in the history of Italy.  Racism like bigotry is encountered in most societies, and Italy has been no exception.  Italians, though a unified sense of national-corporate identity as found in the classic European nations to the north has been historically fragile, have long prided themselves on an absence of racial enmity.  For decades after unification, the country lacked a cohesive national identity, and hostility to outsiders was mainly a matter of regional antipathies.  Italy's colonial adventures led to an upsurge in explicit racial antipathies for the peoples colonized.  Under Benito Mussolini's fascist state, once the régime consolidated its pact with Nazi Germany, anti-Semitic laws were passed, as were laws prohibiting internal migration under certain circumstances.  The post-war mass migrations from the south towards the industrialized north engendered a degree of anti-southern prejudice.  A wave of immigration by "extra-comunitari" (non-EU immigrants.  The word has strong undertones of exclusion) from the late 80s, gave rise to political movements, like the Northern League, hostile to both southern Italians and "clandestini" (illegal immigrants) from areas south of the Mediterranean.  In 2011, a report by Human Rights Watch pointed to growing indications of a rise in xenophobia within Italian society.

Gozo Civic Council referendum, 1973: The Gozo Civil Council (Abolition) Referendum was held in Malta on 11 November 1973.  The referendum was facultative and non-binding and only voters registered in Gozo were allowed to vote, and is to date the only non-national referendum to have been held in the country.

Supporting paragraphs: Swiss immigration referendum, February 2014 Switzerland–European Union relations
Answer: Liechtenstein