Key moments in the Senate expenses controversy

Canada's Senate has been dealing with a controversy over housing and living expenses that has culminated in audits of the expense claims of four senators.

The issue has raised questions about the Senate's travel and housing allowances for senators who make their primary residency more than 100 kilometres from the capital region, and has put the spotlight on residency requirements.

Here's a look at some key moments in the controversy:

September 2003: Mac Harb (Ontario) appointed to the Senate on the advice of Prime Minister Jean Chrtien.

Dec. 22, 2008: Conservatives Mike Duffy (P.E.I.), Pamela Wallin (Saskatchewan) and Patrick Brazeau (Quebec) among 18 people named to the Senate by Prime Minister Stephen Harper.

June 13, 2012: Auditor General Michael Ferguson recommends the Senate require documentation for more of senators' expense claims,after finding the Senate did not have proper documentationto support living expense claims in two of seven cases examined.

Nov. 21, 2012: Marjory LeBreton, government leaderin the Senate,asks the Senate's board of internal economy to determinewhether Brazeau's housing allowance claims are appropriate, following a CTV report questioning Brazeau's residency and housing expense claims.

Dec. 6, 2012: Senate internal economy committee announcesit will conduct an auditto assess "whether all senators' declarations of primary and secondary residence are supported by sufficient documentation."Documentation includesprovincial health card, driver's licence and voting registration.

Feb. 4, 2013: P.E.I. Health Minister Doug Currie confirms to CBC News that Duffy applied for a provincial health cardjust before Dec. 25, 2012.

Feb. 5: CBC News reports that a property tax assessment shows Duffydoes not receive aP.E.I. resident tax creditfor his Cavendish home.

Feb. 7: Wallin tells reporters on Parliament Hill thather home is in Saskatchewanand she is complying with residency requirements.

Feb. 7: Brazeau is arrested on charges of sexual assault and assault. Heis immediately removed from the Conservative caucus andappears at a Gatineau, Que., courtthe next day.

Feb. 8: Senateannounces it has hired outside auditor Deloitteto examine the residency declarations and related expenses of Duffy, Brazeau and Liberal Senator Mac Harb. It is also seeking legal advice about Duffys residency status.

Feb. 12: The Senate votesto put Brazeau on forced leavepending the outcome of the criminal case.

Feb. 13: In an interview with CBC Radio, Wallin says she has declared for Senate officials thather primary residence is in Saskatchewan. In a separate interview,Wallin says she met with Deloittefor an audit of her travel and living expense claims.

Feb. 13:Harperin question period: "In terms of Senator Wallin, I have looked at the numbers. Her travel costs are comparable to any parliamentarian travelling from that particular area of the country over that period of time. For instance, last year Senator Wallin spent almost half of her time in the province she represents in the Senate. The costs are to travel to and from that province, as any similar parliamentarian would do."

Feb. 14: Senator David Tkachuk, who heads the Senate's committee of internal economy,says the audit of Wallin's travel expensesbegan as the first of a series of "random" auditsby the committee afterthe auditor general's June 2012 report critical of the way some senators filed claims.

Feb. 22: Duffytells CBC News in P.E.I.thathe and his wife "are going to voluntarily pay back my living expenses related to the house we have in Ottawa." He blames the expenses controversy on a confusing residency declaration form and unclear rules.

March 1: LeBreton tells CBC Newsvia email that "Senator Duffy maintains a residence in P.E.I. and is qualified to sit in the Senate."

March 26: Auditor Deloitte receives a letter from Duffy's legal counsel stating that Duffy had repaid more than $90,000 in expenses, and would no longer be participating in the audit.

March 27: A revisedPublic Declaration of Assets(external link) for Harper's chief of staff, Nigel Wright,reveals he no longer holdsstock options in the private companyRSI Executive Investco LLC.

March 29: Senate figures showDuffy claimed $5,519 in living expensesforthethree-month period ending in February, higher than the amount claimed in previoustwo quarters.

April 18: Duffy appears to tell Global News he iswaiting for the results ofthe outside auditto decide whether to repay any housing and living expenses.

April 19: Duffy issues statementsaying he has repaid more than $90,000in housing and living expenses. Senate committee on internal economy confirms $90,172.24 repayment, but does not say when payment was made.

April 20: Deloitte receives, from Duffy's lawyer, a copy of a letter Duffy sent to Tkachuk offering to meet with the Senate or Deloitte.Deloitte later says it understood the Senate subcommitteehad notified Duffy the"offer to meet with Deloitte would delay the process, and that the subcommittee agreed that there should be no further delays in the process."

May 9: Senate releasesoutside audits and committee's reportson Brazeau, Duffy and Harb. The committeeorders Brazeau and Harb to repay$48,000 and $51,000, respectively. Harb quits the Liberal caucus and vows to overturn the committee's findings; his expenses are to be further audited for the previous seven years. Harb, Brazeau and Duffy are placed under greater scrutiny for a year. Report on Duffy's expenses notes the senatorhad already repaid $90,000. Senateannounces that an audit of Wallin is ongoing.

May 9: Harper in question period:"Mr. Speaker ...an independent external auditor was brought in to examine all of these expenses. He looked obviously at the expenses of three particular senators who have had some difficulty. The auditor has concluded that the rules in place were not clear, however, the Senate itself has decided it expects better judgment from the senators. Senator Duffy some months ago repaid the money and the Senate has decided that other senators will be expected to similarly repay those amounts."

May 12:RCMP confirmsit is looking into Senate expense claim audits.

May 14: NDP demands release of legal opinion on Duffy residency. LeBreton says Duffy meets all residency requirements.

May 14: Brazeau says in a press release thathe met the Senate's own rules for housing expensesand calls for a publichearing on his case.

May 15: Following a report by CTV News, PMO spokesman Andrew MacDougallconfirms the prime minister's chief of staff, Nigel Wright, wrote a personal chequefor $90,172.24 torepayDuffy's living expenses, and says the cheque was a gift, not a loan. Conservative spokesman Fred Delorey says "no party money involved in any way" in Duffy repayment. Duffy and Wright decline comment. Ethics commissioner Mary Dawson says she is reviewing the payment.

May 16: Mike Duffyquits the Conservative caucusto sit as an Independent senator "pending resolution" of the expense questions. "Throughout this entire situation I have sought only to do the right thing. I look forward to all relevant facts being made clear in due course, at which point I am hopeful I will be able to rejoin the Conservative caucus," Duffy saysin a statement. PMO saysNigel Wright has the "full confidence"of the prime minister. NDP call on Senate ethics office Lyse Ricard to investigate the Duffy-Wright payment.

May 17: PMO spokesman says Wright is "staying on."

May 17: Pamela Wallin releases a statement saying she has recused herself from the Conservative caucus.Wallin says she has been co-operating "fully and willingly" with auditors and adds that she will have no further comment until the audit process is complete. Senate government leader Marjory LeBreton says ina statement Wallin informed her she has "resigned" from caucus to sit as an Independent.

May 19:Nigel Wright resigns"in light of the controversy surrounding my handling of matters involving Senator Duffy," adding he did not tell Harper of the repayment "either before or after the fact." Harper saysin a statementhe accepted Wright's resignation "with great regret." Ray Novak, Harper's principal secretary, takes over as chief of staff.

May 21: Prime Minister Stephen Harper allowed journalists into aConservative caucus meetingwhile he spoke to his MPs and senators.He told them he was "very upset" about the recent conduct of "some parliamentarians" and his own office but he did not name names and did not specifically address the Senate spending scandal. Hedid not take questions from reporters and they were asked to leave when he was done speaking. TheSenate decided to sendDuffy's audit report back to its internal economy committee for a second review.

May 23: Duffy tells reporters Canadians have a right to know the facts and he's preparedto tell "the whole story"at the appropriate time and place. The Senate tables a letter from the RCMP asking for copies of guidelines as part of its review to determine "whether there are grounds to commence a criminal investigation."

May 28: The Senate committee oninternal economy voted unanimously to sendDuffy's expense claims to the RCMP. The committee normally meets behind closed doors but it was opened up to media and the public. The clerk of the committee described a pattern of Duffy claiming living expenses for Ottawa when he was not in the capital on Senate business.

May 30: CBC reports on emails thatreveal Duffywas in consultations with Conservatives about an expanded role in the party and increased compensation including a suggestion he be made a minister.

June4: Senate ethics office Lyse Ricardsuspends her investigationwhile RCMP are examining the issue.