Hillaryland was the self-designated name of a group of core advisors to Hillary Clinton, when she was First Lady of the United States and again when, as United States Senator, she was one of the Democratic Party candidates for President in the 2008 U.S. election.
Henley & Partners is a global citizenship and residence advisory firm, headquartered in Jersey with over 25 offices worldwide.
 It advises governments on residence and citizenship policy and works with them to develop and implement residence and citizenship programs.
 It also consults on general immigration law and policy, visa policy, and the negotiation of associated treaties.
 Henley & Partners’ Residence and Citizenship Practice Group advises individuals, their advisors, bankers and family offices on alternative or additional residence and citizenship.
Robert E. Craven, Sr. (born November 19, 1955) is an American politician and a Democratic member of the Rhode Island House of Representatives representing District 32 since January 1, 2013.
 He serves as Chairman of the House Municipal Government Committee and member of the House Judiciary Committee.
 Craven also serves on the R.I. Governor's "Justice Reinvestment Working Group," which advises on ways to improve Rhode Island's criminal justice system, with the overarching goals of protecting public safety, reducing recidivism, addressing racial disparities, promoting stronger, healthier communities, and reducing cost.
Cheryl Baker (born Rita Maria Crudgington; 8 March 1954) is an English television presenter and singer.
 She is best known for being a member of 1980s pop group Bucks Fizz, who won the 1981 Eurovision Song Contest.
 The group had 20 singles reach the UK top 60 between 1981 and 1988, including three number one hits with "Making Your Mind Up" (1981), "The Land of Make Believe" (1981) and "My Camera Never Lies" (1982).
 Baker left the group in 1993.
 She had previously represented the UK at the 1978 Eurovision Song Contest as a member of the band Co-Co.
 In 2004, she began performing alongside Shelley Preston and fellow original Bucks Fizz member Mike Nolan as The Original Bucks Fizz.
 Preston was replaced by original Bucks Fizz member Jay Aston in 2009.
 Due to a legal dispute in 2011, the group renamed themselves Cheryl Baker, Mike Nolan and Jay Aston, formerly of Bucks Fizz.
 With the addition of Robert (Bobby) McVay they are now "The Fizz" and are working on new material
Cheryl D. Mills (born 1965) is an American lawyer and corporate executive.
 She first came into public prominence while serving as deputy White House Counsel for President Bill Clinton, whom she defended during his 1999 impeachment trial.
 She has worked for New York University as Senior Vice President, served as Senior Adviser and Counsel for Hillary Clinton's 2008 presidential campaign, and is considered a member of Hillary Clinton's group of core advisers, self-designated as "Hillaryland".
 She served as Counselor and Chief of Staff to Hillary Clinton during her whole tenure as United States Secretary of State.
 After leaving the State Department in January, 2013, she founded BlackIvy Group, which builds businesses in Africa.
The Boston Consulting Group (BCG) is an American worldwide management consulting firm with 85 offices in 48 countries.
 The firm advises clients in the private, public, and not-for-profit sectors around the world, including more than two-thirds of the Fortune 500 and is one of the 'Big Three' strategy consulting firms (MBB).
 Considered one of the most prestigious management consulting firms in a branche-internal survey, BCG was ranked third in "Fortune"'s "100 Best Companies to Work For" in 2017.
Cheryl: My Story is an autobiography written by the British recording artist Cheryl Cole, co-written with Rachel Murphy.
 It was published by Harper on 11 October 2012.
 In addition to dealing with her childhood and her rise to fame as a member of the girl group Girls Aloud, Cole also discusses her volatile marriage with the footballer Ashley Cole, her life-threatening battle with malaria and her relationship with "The X Factor" boss Simon Cowell.
 While Cheryl Cole was the subject of criticism for some of the book's content, "Cheryl: My Story" was well received by entertainment critics, who complimented the candid nature of the autobiography.
 It topped "The Sunday Times" Bestseller list, selling an average of 2,000 copies a day in its first five months of release.
Steptoe & Johnson LLP is an international law firm headquartered in Washington, D.C. with offices in New York City, Los Angeles, Chicago, San Francisco, Phoenix, London, Brussels and Beijing.
 The firm advises notable multinational and Fortune 500 corporations on significant transactional, litigation, arbitration, regulatory, IP, white collar defense, tax and public policy matters and is considered a part of the group of elite American "white shoe" law firms.
 Based on various renowned rankings it is constantly ranked as a top-tier firm.
 According to the Am Law 100 it is the 93rd highest-grossing law firm in the United States.
The Cabinet of Ministers of the Republic of Mauritius is the official council which advises the President of the Republic in the making of major decisions.
 It is led by the Prime Minister and a total of 23 ministers and the Attorney General, who is considered to be a cabinet member.
 The constitution of the Republic provides a cabinet under the leadership of the Prime Minister that must be appointed by the President after each general elections.
Digital Clarity Group, Inc. is a research-driven advisory firm focused on helping business leaders navigate the digital transformation by providing advice across four themes: Consumer Engagement, the Social Enterprise, Innovative Change, and Adaptive Technology.
 Headquartered in New York, United States, the company has offices in Los Angeles, Boston, Toronto, Bonn, and London, England.
 Digital Clarity Group advises buyers of business technology by helping them select enterprise software for their needs, and/or a qualified service provider (interactive agency, systems integrator, etc.) to help them use it.
 The firm also authors research and Insight Reports, all of which are freely available to subscribers.

Question: To whom was the self-designated group advises to in which Cheryl D. Mills was considered a member?
Answer: Hillary Clinton