"She designed them, she implemented them when she was home secretary", said Rob Ford, a professor of politics at the University of Manchester.
Three days after handing in her resignation as Home Secretary, Mrs Rudd took the opportunity to congratulate Sajid Javid MP for his promotion to the role.
British Prime Minister Theresa May appointed a new interior minister yesterday after suffering a blow with the resignation of Amber Rudd for having misled lawmakers over deportation targets for illegal immigrants.
He was instructing the press office to brief people like me that "there are no removal targets for immigration enforcement officers, regional or national".
Speaking at the debate, Javid said this would involve "independent oversight and challenge to a lessons-learned review already under way in my department".
It came hours after her former deputy, Brandon Lewis, confirmed that Rudd had set an "ambition" for the government to deport more illegal immigrants.
Now here is the mystery.
Javid is the son of a Pakistani bus driver who had arrived in Britain in 1961 with one pound in his pocket.
Promoted from communities secretary, Javid's first task will be to take some of the political heat out of the Windrush scandal.More news: Snap Takes A Revenue Hit From Unpopular Redesign
In a series of weekend Twitter messages, Rudd said she was unaware of the memo but admitted she should have known of the targets.
"People who have entered the United Kingdom illegally or overstayed here should expect to face the full force of the law and know that they will be removed if they will not leave this country voluntarily".
Britain's new interior minister vowed Monday to sort out an immigration scandal shaking the government, saying that as the child of immigrants he was angered by the mistreatment of long-term residents from the Caribbean.
Javid campaigned to remain in the European Union during the 2016 referendum, even though a few months before the vote he said his "heart" was for Brexit.
And, while Theresa May will be hoping this appointment reassures BME communities who mistrust her administration, Mr Javid will need to show far more leadership than he did in the aftermath of last June's Grenfell Tower disaster - the then Communities Secretary's hesitancy was symptomatic of an uncaring government still stunned by the previous week's election result.
Immigration control remains a hot topic in the United Kingdom and was a factor in the Brexit vote.
The furor has grown since The Guardian reported that some people who came to the United Kingdom from the Caribbean in the decades after World War II had recently been refused medical care in Britain or threatened with deportation because they could not produce paperwork proving their right to reside in the country.
The government has apologised to Windrush migrants and their families, promised citizenship and compensation to those affected, including to people who have lost their jobs and been threatened with deportation because of the errors.
The main opposition Labour Party accused Rudd of being a "human shield" for May.