Justin Trudeau, Canadian Prime Minister, denied the infringement after trying to defend one of the country's largest companies during a corruption trial.
Mr Trudeau said that his or her inner lobbying was made for the protection of jobs by the engineering giants of SNC-Lavalin.
In an explosive testimony, former Minister of Justice Jody Wilson-Raybould said he was facing "lasting" pressure by abandoning the criminal proceedings of a company based in Quebec.
Opposition conservatives call for a liberal PM to resign.
Following a statement by Mrs Wilson-Raybould before the Commons Justice Committee in Ottawa, they are calling for a public inquiry.
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On Thursday morning, speaking to reporters, Mr Trudeau said he did not agree with the "characterization" of events and maintained his rules for his staff.
Speaking to journalists in Montreal on Thursday, the commander-in-chief said he trusted fully in the examination of a parliamentary justice committee on the matter and in the investigation of the federal ethics commissioner and "fully participates" in this process.
Ms. Wilson-Raybould told the Justice Committee on Wednesday that she was trying to intervene and fight with "suppressed threats" from the highest government officials looking for the Montreal construction company.
The former Minister of Justice and Attorney at Law said that his colleagues had a "lasting" and "inadequate" effort for four months to demand a possible delay in the settlement of the construction company.
This agreement would have allowed the company to avoid criminal proceedings and instead to adopt alternative conditions such as sanctions or enhanced compliance measures.
Ms. Wilson Raybould said that although some discussions about the consequences of the decision were normal, the pressure was much higher than that of a lawyer.
In Canada, a lawyer must act independently while respecting the function of a prosecutor and decisions should not be politically motivated.
SNC-Lavalin is one of the world's largest engineering and construction companies and employs around 9,000 people in Canada.
The conviction of fraud and corruption charges may result in a decade-long ban on bidding for federal contracts, which would be a major financial hit for the company.
Previously, he was charged with illegal donations to the Liberal Party and has deep roots in the Quebec-rich province, which is expected to be a battlefield in the October general election.
Mrs Wilson-Raybould said that, at various meetings, Mr Trudeau and senior officials have repeatedly expressed concern about the possibility of job losses and the possible political consequences of the negotiation.
He said he made it clear that he refused to help the company to avoid the trial and believes why he had failed in a cabinet shuffle in January, which Mr Trudeau is now.
Opposition parties put pressure on the prime minister, and conservatives said the Royal Canadian police should immediately open the investigation.
Mr Trudeau said he was aware that the RCMP had not recruited his colleagues.
What is the reaction?
Political commentators, Mrs Wilson-Raybould's remarks, are deeply damaging to Mr Trudeau and the Liberals.
Chantal Hebert, written in Toronto Star, says the prime minister "was already in his neck in the SNC-Lavalin mess".
"On Wednesday, Jody Wilson-Raybould's former lawyer pushed his head further. The liberal government will have a harder time digging into the deep hook he dug before the next campaign."
In the National Post, Andrew Coyne, the writer, said that Wilson-Raybould's testimony is "an attitude that seems to permeate this government: that the law is not an honorable institution, but just another obstacle to finding any necessary means. ”
Patrick Lagace, a La Presse journalist from Montreal, said his remark suggests that "the prime minister and his decree, the rule of law and the independence of the Attorney General are at least negotiable".
In Maclean's magazine, Paul Wells suggests that his remarks show a "badly smiled defense racket" whose participants were surprised when they refused to play.
What happens to SNC–Lavalin?
The company and its two subsidiaries face fraud and corruption charges of around $ 48 million (£ 36 million; £ 28 million) in bribes allegedly given to Libyan officials between 2001 and 2001.
The company lobbied openly to allow the remediation agreement instead of the trial, saying it cleaned the house and changed its way.
SNC-Lavalin and its supporters say that it would be unfair to employ the entire company and thousands of people because of the violation of former leaders.
Preliminary hearings have begun, and the company says it is "strongly defending itself" against allegations.
This is not the first time SNC-Lavalin is in trouble.
In 2013, the World Bank banned the company and its subsidiaries for up to ten years from concluding contracts with the crime agency in the Bangladesh Bridge Agreement, the oldest expiration date.
In 2016, the Canadian federal election agency said former leaders had set up a system to illegally give C $ 118,000 to federal liberals and conservatives in 2004-11. Between. Most of the resources came to the Liberal Party.