Home Secretary Theresa May accused judges of "subverting" British democracy and making the streets of Britain more dangerous by ignoring new rules aimed at deporting more foreign criminals.
In a scathing attack, she vowed to introduce primary legislation to restrict the human rights of offenders after a minority of the judiciary decided to "ignore parliament's wishes".
But she warned the delay in getting that onto the statute book would inevitably mean "more victims of violent crimes committed by foreigners in this country".
MPs approved new guidance for judges in July last year making clear the right to a family life - set out in Article 8 of the European Convention on Human Rights - was only qualified.
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The letter was signed by the CBI, British Chambers of Commerce, the EEF, the Institute of Directors and the Federation of Small Businesses.
A spokesperson said Rory Stewart's remarks were in line with the British government’s stated position.