Not since Peter Goldsmith ruled that it was legitimate for Britain to go to Iraq to have a general attorney playing such a controversial part in British politics.
However, Geoffrey Cox, Chief Prosecutor of Theresa May, assumes a critical role in deciding whether the UK will report to a compromise with the EU on Northern Ireland that would break the blind street in negotiations with Brexit.
In 2003, Lord Goldsmith came to a controversial verdict that the invasion of Iraq was allowed under international law. The chief prosecutor's decision – dismissing his previous suspicions – gave Tony Blair's then prime minister the green light he was supposed to suppress, supporting the invasion of Iraq.
Minister Brexitera hopes that Mr Cox, who has voted for a referendum on leaving the EU, will stop Mrs May, who is more strongly confronted with their concerns over the conditions the United Kingdom leaves the blockade. However, a government summit on Tuesday warned of the need to compromise the Brexit withdrawal treaty, the People's Debate Statement says, and now it seems to be the key to Prime Minister's efforts to uncover the deal.
The government has requested that it draft a legal text to solve the unresolved issue of the so-called " Irish backstop: an arrangement to avoid the return of a difficult border between Northern Ireland and the Republic of Ireland.
The task facing Mr. Cox is that there is a formula that shows the EU that Britain is committed to backstop, and at the same time creates a "review mechanism" that allows the UK to come out of the arrangement
The government's decision to give this role to Mr. Cox, the Queen of Counselors, is no surprise. Any solution is complex and requires a legal forensic brain.
"He is extremely brilliant – probably one of the country's best legal minds," said Richard Woodman, partner at law firm Royds Withy King, who several times sent Mr Cox.
However, giving Mr Cox an important role in the final game of the Brexit withdrawal contract is far more than his ability. Over the past year, the Cabinet Brexiters became disturbed in the way Mrs May refused to support the sudden and complex changes in her Brexit strategy without time to question the details.
They are particularly aggravated by what happened last December when the prime minister signed an agreement with the EU on Irish return.
"All Brexiters are embarrassed by the announcement in December," said one of the leading conservative deputy. "None of them are a lawyer, and they did not really understand what was going on. Now they all delegate to Geoffrey."
In the latest proposed version of the Irish plant, the UK will remain in the EU customs union after the transition agreement expires in 2020 unless a trade agreement has been established and Ministers Brexiter fear that it might leave the United Kingdom in close contact with the block forever.
So many Brexiters are looking for Mr Cox to come up with an Irish backstop mechanism that gives the UK a clear exit from it.
Their trust in it crystallized last month when she spoke at a conservative party, saying Brexit would soon give Great Britain a "precious reward" for parliamentary sovereignty.
Representatives of Brexiter also noted that at a recent government meeting he appealed to the EU for an Irish backstop without any time limit, saying he would leave Britain "stuck in the equivalent of Dante's first round of hell." In other words, in a state of limbo.
But after a government meeting on Tuesday, some of Brex's lovers began questioning whether the chief prosecutor was a worthy champion for their cause.
Mr Cox warned ministers that if they want to get an agreement with the EU this month, they will have to approve an Irish backstop revision mechanism that allows the EU to jointly decide with the United Kingdom when the arrangement is over, people told the meeting.
Other Brexiter MPs noted that, during the speech of the party, Mr. Cox admitted that any agreement with the EU would eventually require a compromise on both sides.
Until the appointment of the Chief State Attorney in July, Mr. Cox was one of the few in parliament: a lawyer-politician who combines two jobs.
In 1992 he co-founded Thomas More Chambers, who has expertise in commercial, criminal, family and financial law. His career made him one of the best awarded prizes, in 2016 he paid nearly £ 670,000.
Some attorneys are confused about why he has become such an important figure in the government. Jolyon Maugham, an attorney and lead reporter, said Mr. Cox's experience was largely criminal, not EU law, crucial to negotiations in Brexit.
"It is likely that more than a thousand people in the government are better equipped to advise the government on what they are reporting than to Geoffrey Cox," he added.
But a conservative representative said that Mr. Cox was confident that there would be power at the final stage of cabinet discussions on the Brexit withdrawal agreement.
"It reminds me of what people have said about Lord Mackay [the former lord chancellor in [Margaret] Thatcher's cabinet, "he added." When you make an argument, no one else has to say anything because he already said that. It's very thorough.