The day before his appointment, Javid had told The Sunday Telegraph that issue felt "very personal", saying: "I thought, that could be my mum, it could be my dad, it could be my uncle, it could be me".
Rudd had claimed to a parliamentary committee that her department did not impose targets, but the Guardian reported on Sunday that in a private letter to May in 2017, she had informed the Prime Minister that she meant to boost deportations by 10%.
But Downing Street stressed that, while Mrs May was aware of targets for illegal immigrant removals during her time as home secretary, she ceased receiving this operational information when she left the Home Office.
Rudd was the fourth high-ranking minister to resign from Prime Minister May's Conservative government in the past six months. His father, Abdul, a bus driver, came to the United Kingdom from Pakistan in 1961, reportedly with just £1 in his pocket. The most urgent task I have is to help those British citizens who came from the Caribbean, the Windrush generation, and make sure they are all treated with the decency and fairness they deserve.
"I was really concerned when I first started hearing and reading about some of the issues".
But moving Sajid Javid in, after Amber Rudd took herself out, does not end the prime minister's problems.
May has apologised for the treatment of the Windrush generation, but she had two big reasons for hoping Rudd could survive the scandal. This Monday, Abbott clarified on Good Morning Britain that "The Labour party isn't calling for an amnesty" and refused to answer questions about how Labour would treat illegal immigrants.
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And he said the standards would hurt automakers and consumers who can't afford or don't want to buy more fuel-efficient vehicles. This comes as California and 16 other states have sued to stop the EPA from weakening fuel-efficiency automobile standards.
The 48-year-old Javid was a senior investment banker at Deutsche Bank before being elected to parliament in 2010.
He added: 'Like her, I am also a second generation migrant and I know that she shares that anger, and she should respect that other people do - she doesn't have a monopoly on that'.
"Her backstory is typical of many women on the A-list of candidates David Cameron set up to symbolise his modernisation programme ..."
They came to symbolize the seismic demographic changes that took place in post-war Britain, when hundreds of thousands of people came to the United Kingdom from former British colonies, known as the Commonwealth.
In her resignation letter to Mrs May, Ms Rudd said: "I feel it is necessary to do so because I inadvertently misled the Home Affairs Select Committee over targets for removal of illegal immigrants during their questions on Windrush". The state has denied people access to health care, work, housing and even a bank account if they don't have the right papers.
The pressure then ratcheted up on Friday with the leak of a Home Office memo, which referred to a target of 2,800 enforced returns for 2017-18, and the progress towards a 10% increase in enforced returns "which we promised the Home Secretary earlier this year".
Ms Rudd had been among those accused of urging the Prime Minister to opt for a softer Brexit than some of her Cabinet allies would prefer, including Vote Leave bigwigs Boris Johnson and Michael Gove.